MX-5 Miata NB2 2001-05 (BP-Z3, VVT; excludes Mazdaspeed) → Emtron Shadow 8 (auto)
MX-5 Miata NB2 2001-05 (BP-Z3, VVT; excludes Mazdaspeed) — Emtron — Shadow 8
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-11
Before you start
Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
Install modifications
Steps on the car itself, outside the harness. Every harness for this car inherits them.
- Re-route the pressure-sensor vacuum hose to the intake manifoldrequired
Re-route the pressure sensor's (Mazda "EGR boost sensor", pin 4AE) vacuum hose directly to the intake manifold, bypassing the EGR boost solenoid. The stock ECU multiplexes baro + MAP through that solenoid: with it off the sensor reads atmosphere, with it energized it reads manifold. After re-routing the sensor reads MAP only, so the standalone needs its own barometric source — its onboard baro sensor if fitted, or a separate baro sensor on a spare analog input. (Alternative, not recommended: keep the hose stock and have the ECU energize the solenoid permanently via a low-side output switched with ignition; this costs an output.)
Why: With the solenoid off (its default) the sensor reads atmospheric pressure, not manifold pressure, so a standalone that uses this sensor as its MAP input would read the wrong value.
Where: EGR boost solenoid and the pressure sensor's vacuum hose (sensor signal 4AE).
Source: Justin Barrera — Miata NA/NB wiring corrections
| Status | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 57 wires · 8 connectors · 3 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 3-1447221-4 |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-2-P | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-4-D | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | SHADOW8-A-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-14V-1 | SHADOW8-B-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-4-AG | SHADOW8-B-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-3-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-3-B | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-4-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | SHADOW8-A-34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | SHADOW8-A-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-4-O | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-0V-1 | SHADOW8-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | SHADOW8-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-4-L | SHADOW8-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-3-Y | SHADOW8-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-3-V | SHADOW8-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-4-M | SHADOW8-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-3-F | SHADOW8-B-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-3-I | SHADOW8-B-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-2-A | SHADOW8-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-2-D | SHADOW8-B-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-2-G | SHADOW8-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-2-J | SHADOW8-B-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-4-S | SHADOW8-B-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-2-B | SHADOW8-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-2-C | SHADOW8-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-2-K | SHADOW8-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-2-M | SHADOW8-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-3-H | SHADOW8-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-2-O | SHADOW8-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-3-J | SHADOW8-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-3-P | SHADOW8-B-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-2-Q | SHADOW8-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-2-E | SHADOW8-B-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-2-F | SHADOW8-B-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-2-H | SHADOW8-B-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-2-I | SHADOW8-B-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-2-N | SHADOW8-B-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-2-R | SHADOW8-B-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-3-C | SHADOW8-B-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-4-X | SHADOW8-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-4-AE | SHADOW8-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-4-V | SHADOW8-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-4-AA | SHADOW8-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-4-W | SHADOW8-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-4-P | SHADOW8-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-4-N | SHADOW8-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-4-AD | SHADOW8-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-3-T | SHADOW8-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-3-S | SHADOW8-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-4-B | SHADOW8-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-4-C | SHADOW8-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-4-F | SHADOW8-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-4-H | SHADOW8-A-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-4-I | SHADOW8-B-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-4-J | SHADOW8-B-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
Bench test (before first power-up)
Pre-power install steps (make these cuts/modifications on the car first, then verify the checks below): Re-route the pressure-sensor vacuum hose to the intake manifold.
Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).
| # | Probe A | Probe B | Expect | Why | Reading |
|---|---|---|---|---|---|
| 1 | SHADOW8-A-1 | SHADOW8-A-34 | open (OL) | +12 V supply must not touch power ground | |
| 2 | SHADOW8-A-1 | SHADOW8-A-4 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | SHADOW8-A-3 | SHADOW8-A-4 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 4 | SHADOW8-B-1 | SHADOW8-A-4 | open (OL) | +12 V supply must not touch sensor ground | |
| 5 | SHADOW8-A-1 | SHADOW8-A-3 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 6 | SHADOW8-A-34 | SHADOW8-A-3 | open (OL) | power ground must not touch 5 V sensor reference | |
| 7 | SHADOW8-A-34 | SHADOW8-B-1 | open (OL) | power ground must not touch +12 V supply | |
| 8 | SHADOW8-B-1 | SHADOW8-A-3 | open (OL) | +12 V supply must not touch 5 V sensor reference |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Injector 1 | — | W21 | — | 0.5 | SHADOW8-B-2 | — | — | — |
| B | Cooling fan relay | — | W26 | — | 0.5 | SHADOW8-B-10 | — | — | — |
| C | Condenser fan relay | — | W27 | — | 0.5 | SHADOW8-B-11 | — | — | — |
| D | Injector 2 | — | W22 | — | 0.5 | SHADOW8-B-3 | — | — | — |
| E | EGR valve | — | W35 | — | 0.5 | SHADOW8-B-7 | — | — | — |
| F | EGR valve | — | W36 | — | 0.5 | SHADOW8-B-8 | — | — | — |
| G | Injector 3 | — | W23 | — | 0.5 | SHADOW8-B-4 | — | — | — |
| H | EGR valve | — | W37 | — | 0.5 | SHADOW8-B-9 | — | — | — |
| I | EGR valve | — | W38 | — | 0.5 | SHADOW8-B-22 | — | — | — |
| J | Injector 4 | — | W24 | — | 0.5 | SHADOW8-B-5 | — | — | — |
| K | A/C clutch relay | — | W28 | — | 0.5 | SHADOW8-B-12 | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Fuel pump relay | — | W29 | — | 0.5 | SHADOW8-B-13 | — | — | — |
| N | VTCS solenoid (intake butterflies) | — | W39 | — | 0.5 | SHADOW8-B-23 | — | — | — |
| O | Fuel pump relay (non-immobiliser) | — | W31 | — | 0.5 | SHADOW8-B-15 | — | — | — |
| P | ISC valve +14V feed | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| Q | ISC valve low side | — | W34 | — | 0.5 | SHADOW8-B-6 | — | — | — |
| R | Malfunction indicator lamp (MIL) | — | W40 | — | 0.5 | SHADOW8-B-24 | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| C | Purge solenoid valve | — | W41 | — | 0.5 | SHADOW8-B-25 | — | — | — |
| D | EGR boost solenoid | — | — | — | — | — | — | — | — |
| E | NC | — | — | — | — | — | — | — | — |
| F | Ignition 1 (coils 1+4, wasted spark) | — | W19 | — | 0.5 | SHADOW8-B-27 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Main relay | — | W30 | — | 0.5 | SHADOW8-B-14 | — | — | — |
| I | Ignition 2 (coils 2+3, wasted spark) | — | W20 | — | 0.5 | SHADOW8-B-28 | — | — | — |
| J | Front O2 heater | — | W32 | — | 0.5 | SHADOW8-B-16 | — | — | — |
| K | EVAP leak detection pump | — | — | — | — | — | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Alternator control | — | — | — | — | — | — | — | — |
| N | NC | — | — | — | — | — | — | — | — |
| O | Tachometer output | — | — | — | — | — | — | — | — |
| P | Rear O2 heater | — | W33 | — | 0.5 | SHADOW8-B-17 | — | — | — |
| Q | Data link connector (K-line) | — | — | — | — | — | — | — | — |
| R | NC | — | — | — | — | — | — | — | — |
| S | Immobiliser | — | W51 | — | 0.5 | SHADOW8-A-27 | — | — | — |
| T | Vehicle speed | — | W50 | — | 0.5 | SHADOW8-A-26 | — | — | — |
| U | Charge lamp | — | — | — | — | — | — | — | — |
| V | Cam position (CMP) | — | W17 | — | 0.5 | SHADOW8-A-6 | — | — | — |
| W | NC | — | — | — | — | — | — | — | — |
| X | NC | — | — | — | — | — | — | — | — |
| Y | Crank position (CKP) | — | W16 | — | 0.5 | SHADOW8-A-5 | — | — | — |
| Z | NC | — | — | — | — | — | — | — | — |
OEM-4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| AA | Rear O2 signal | — | W45 | — | 0.5 | SHADOW8-A-13 | — | — | — |
| AB | NC | — | — | — | — | — | — | — | — |
| AC | TCM (automatic only) | — | — | — | — | — | — | — | — |
| AD | Fuel level | — | W49 | — | 0.5 | SHADOW8-A-20 | — | — | — |
| AE | Pressure sensor (Mazda: EGR boost sensor) | — | W43 | — | 0.5 | SHADOW8-A-11 | — | — | — |
| AF | ECU power +14V (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| AG | Constant +12V | — | W6 | — | 0.85 | SHADOW8-B-1 | — | — | — |
| AH | EVAP leak detection pump solenoid valve | — | — | — | — | — | — | — | — |
| B | Brake switch | — | W52 | — | 0.5 | SHADOW8-A-28 | — | — | — |
| C | Power steering pressure switch | — | W53 | — | 0.5 | SHADOW8-A-29 | — | — | — |
| D | VVT oil-control solenoid +12V feed | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| E | Diagnostic (DLC TEN) (NA) | — | — | — | — | — | — | — | — |
| F | A/C request | — | W54 | — | 0.5 | SHADOW8-A-30 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Neutral switch | — | W55 | — | 0.5 | SHADOW8-A-31 | — | — | — |
| I | Clutch switch | — | W56 | — | 0.5 | SHADOW8-B-18 | — | — | — |
| J | VTCS vacuum switch | — | W57 | — | 0.5 | SHADOW8-B-19 | — | — | — |
| K | NC | — | — | — | — | — | — | — | — |
| L | +5V sensor supply | — | W15 | — | 0.5 | SHADOW8-A-3 | — | — | — |
| M | Knock sensor | — | W18 | — | 0.5 | SHADOW8-A-16 | — | — | — |
| N | Intake air temperature (IAT) | — | W48 | — | 0.5 | SHADOW8-A-19 | — | — | — |
| O | Signal ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| P | Coolant temperature (ECT) | — | W47 | — | 0.5 | SHADOW8-A-18 | — | — | — |
| Q | NC | — | — | — | — | — | — | — | — |
| R | VVT oil-control solenoid (low-side control) | — | — | — | — | — | — | — | — |
| S | Ignition switch (IG1) sense | — | W25 | — | 0.5 | SHADOW8-B-21 | — | — | — |
| T | Generator output voltage (terminal P) | — | — | — | — | — | — | — | — |
| U | NC | — | — | — | — | — | — | — | — |
| V | Throttle position (TPS) | — | W44 | — | 0.5 | SHADOW8-A-12 | — | — | — |
| W | Front O2 signal | — | W46 | — | 0.5 | SHADOW8-A-14 | — | — | — |
| X | Mass air flow (MAF) | — | W42 | — | 0.5 | SHADOW8-A-10 | — | — | — |
| Y | NC | — | — | — | — | — | — | — | — |
| Z | TCM (automatic only) | — | — | — | — | — | — | — | — |
SHADOW8-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU supply | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | 8.0V sensor supply | — | — | — | — | — | — | — | — |
| 3 | 5.0V sensor supply | — | W15 | — | 0.5 | OEM-4-L | — | — | — |
| 4 | 0V analog reference | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Crank position sensor | — | W16 | — | 0.5 | OEM-3-Y | — | — | — |
| 6 | Sync position sensor | — | W17 | — | 0.5 | OEM-3-V | — | — | — |
| 7 | Trigger ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Shield | — | — | — | — | — | — | — | — |
| 9 | Ground 1 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Analog voltage 1 | — | W42 | — | 0.5 | OEM-4-X | — | — | — |
| 11 | Analog voltage 2 | — | W43 | — | 0.5 | OEM-4-AE | — | — | — |
| 12 | Analog voltage 3 | — | W44 | — | 0.5 | OEM-4-V | — | — | — |
| 13 | Analog voltage 4 | — | W45 | — | 0.5 | OEM-4-AA | — | — | — |
| 14 | Analog voltage 5 | — | W46 | — | 0.5 | OEM-4-W | — | — | — |
| 15 | CAN bus 1 high | — | — | — | — | — | — | — | — |
| 16 | Knock 1 + | — | W18 | — | 0.5 | OEM-4-M | — | — | — |
| 17 | Knock 1 − | — | — | — | — | — | — | — | — |
| 18 | Analog voltage 6 | — | W47 | — | 0.5 | OEM-4-P | — | — | — |
| 19 | Analog voltage 7 (switchable 1k pull-up) | — | W48 | — | 0.5 | OEM-4-N | — | — | — |
| 20 | Analog voltage 8 (switchable 1k pull-up) | — | W49 | — | 0.5 | OEM-4-AD | — | — | — |
| 21 | Analog voltage 9 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 22 | Analog voltage 10 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 23 | CAN bus 1 low | — | — | — | — | — | — | — | — |
| 24 | Knock 2 + | — | — | — | — | — | — | — | — |
| 25 | Knock 2 − | — | — | — | — | — | — | — | — |
| 26 | Digital input 1 | — | W50 | — | 0.5 | OEM-3-T | — | — | — |
| 27 | Digital input 2 | — | W51 | — | 0.5 | OEM-3-S | — | — | — |
| 28 | Digital input 3 | — | W52 | — | 0.5 | OEM-4-B | — | — | — |
| 29 | Digital input 4 | — | W53 | — | 0.5 | OEM-4-C | — | — | — |
| 30 | Digital input 5 | — | W54 | — | 0.5 | OEM-4-F | — | — | — |
| 31 | Digital input 6 | — | W55 | — | 0.5 | OEM-4-H | — | — | — |
| 32 | CAN bus 2 high | — | — | — | — | — | — | — | — |
| 33 | CAN bus 2 low | — | — | — | — | — | — | — | — |
| 34 | Ground 2 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
SHADOW8-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Battery constant (HOT) supply | — | W6 | — | 0.85 | OEM-4-AG | — | — | — |
| 2 | Injector cylinder 1 | — | W21 | — | 0.5 | OEM-2-A | — | — | — |
| 3 | Injector cylinder 2 | — | W22 | — | 0.5 | OEM-2-D | — | — | — |
| 4 | Injector cylinder 3 | — | W23 | — | 0.5 | OEM-2-G | — | — | — |
| 5 | Injector cylinder 4 | — | W24 | — | 0.5 | OEM-2-J | — | — | — |
| 6 | Injector cylinder 5 | — | W34 | — | 0.5 | OEM-2-Q | — | — | — |
| 7 | Injector cylinder 6 | — | W35 | — | 0.5 | OEM-2-E | — | — | — |
| 8 | Injector cylinder 7 | — | W36 | — | 0.5 | OEM-2-F | — | — | — |
| 9 | Injector cylinder 8 | — | W37 | — | 0.5 | OEM-2-H | — | — | — |
| 10 | Aux output 1 | — | W26 | — | 0.5 | OEM-2-B | — | — | — |
| 11 | Aux output 2 | — | W27 | — | 0.5 | OEM-2-C | — | — | — |
| 12 | Aux output 3 | — | W28 | — | 0.5 | OEM-2-K | — | — | — |
| 13 | Aux output 4 | — | W29 | — | 0.5 | OEM-2-M | — | — | — |
| 14 | Aux output 5 | — | W30 | — | 0.5 | OEM-3-H | — | — | — |
| 15 | Aux output 6 | — | W31 | — | 0.5 | OEM-2-O | — | — | — |
| 16 | Aux output 7 | — | W32 | — | 0.5 | OEM-3-J | — | — | — |
| 17 | Aux output 8 | — | W33 | — | 0.5 | OEM-3-P | — | — | — |
| 18 | Digital input 7 | — | W56 | — | 0.5 | OEM-4-I | — | — | — |
| 19 | Digital input 8 | — | W57 | — | 0.5 | OEM-4-J | — | — | — |
| 20 | Digital input 9 | — | — | — | — | — | — | — | — |
| 21 | Digital input 10 / ignition switch | — | W25 | — | 0.5 | OEM-4-S | — | — | — |
| 22 | Aux output 9 | — | W38 | — | 0.5 | OEM-2-I | — | — | — |
| 23 | Aux output 10 | — | W39 | — | 0.5 | OEM-2-N | — | — | — |
| 24 | Aux output 11 | — | W40 | — | 0.5 | OEM-2-R | — | — | — |
| 25 | Aux output 12 | — | W41 | — | 0.5 | OEM-3-C | — | — | — |
| 26 | Aux 9–12 power supply | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | Ignition TTL cylinder 1 | — | W19 | — | 0.5 | OEM-3-F | — | — | — |
| 28 | Ignition TTL cylinder 2 | — | W20 | — | 0.5 | OEM-3-I | — | — | — |
| 29 | Ignition TTL cylinder 3 | — | — | — | — | — | — | — | — |
| 30 | Ignition TTL cylinder 4 | — | — | — | — | — | — | — | — |
| 31 | Ignition TTL cylinder 5 | — | — | — | — | — | — | — | — |
| 32 | Ignition TTL cylinder 6 | — | — | — | — | — | — | — | — |
| 33 | Ignition TTL cylinder 7 | — | — | — | — | — | — | — | — |
| 34 | Ignition TTL cylinder 8 | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W12 | — | 0.5 | OEM-4-O | — | — | — |
| 1 | — | — | W13 | — | 0.5 | SHADOW8-A-4 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | SHADOW8-A-7 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-2-P | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-4-AF | — | — | — |
| 1 | — | — | W3 | — | 0.85 | OEM-4-D | — | — | — |
| 1 | — | — | W4 | — | 0.85 | SHADOW8-A-1 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | SHADOW8-B-26 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W7 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-3-B | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-4-A | — | — | — |
| 1 | — | — | W10 | — | 0.85 | SHADOW8-A-34 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | SHADOW8-A-9 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-2-A | Injector 1 | injector_out | SHADOW8-B-2 | Injector cylinder 1 | injector_out | YB | single_source |
| OEM-2-B | Cooling fan relay | low_side_out | SHADOW8-B-10 | Aux output 1 | low_side_out | RY | single_source |
| OEM-2-C | Condenser fan relay | low_side_out | SHADOW8-B-11 | Aux output 2 | low_side_out | LW | single_source |
| OEM-2-D | Injector 2 | injector_out | SHADOW8-B-3 | Injector cylinder 2 | injector_out | VG | single_source |
| OEM-2-E | EGR valve | low_side_out | SHADOW8-B-7 | Injector cylinder 6 | injector_out | Lg | single_source |
| OEM-2-F | EGR valve | low_side_out | SHADOW8-B-8 | Injector cylinder 7 | injector_out | WG | single_source |
| OEM-2-G | Injector 3 | injector_out | SHADOW8-B-4 | Injector cylinder 3 | injector_out | YR | single_source |
| OEM-2-H | EGR valve | low_side_out | SHADOW8-B-9 | Injector cylinder 8 | injector_out | PB | single_source |
| OEM-2-I | EGR valve | low_side_out | SHADOW8-B-22 | Aux output 9 | hbridge_out | P | single_source |
| OEM-2-J | Injector 4 | injector_out | SHADOW8-B-5 | Injector cylinder 4 | injector_out | YG | single_source |
| OEM-2-K | A/C clutch relay | low_side_out | SHADOW8-B-12 | Aux output 3 | low_side_out | LB | single_source |
| OEM-2-L | NC | — | — | — | — | unverified | |
| OEM-2-M | Fuel pump relay | low_side_out | SHADOW8-B-13 | Aux output 4 | low_side_out | RW | single_source |
| OEM-2-N | VTCS solenoid (intake butterflies) | low_side_out | SHADOW8-B-23 | Aux output 10 | hbridge_out | BW | single_source |
| OEM-2-O | Fuel pump relay (non-immobiliser) | low_side_out | SHADOW8-B-15 | Aux output 6 | switch_out | R | single_source |
| OEM-2-P | ISC valve +14V feed | power_in | SHADOW8-A-1 + SHADOW8-B-26 | ECU supply + Aux 9–12 power supply | power_in | Or | single_source |
| OEM-2-Q | ISC valve low side | low_side_out | SHADOW8-B-6 | Injector cylinder 5 | injector_out | VR | single_source |
| OEM-2-R | Malfunction indicator lamp (MIL) | low_side_out | SHADOW8-B-24 | Aux output 11 | hbridge_out | WL | single_source |
| OEM-3-A | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | B | single_source |
| OEM-3-B | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | BR | single_source |
| OEM-3-C | Purge solenoid valve | low_side_out | SHADOW8-B-25 | Aux output 12 | hbridge_out | GY | single_source |
| OEM-3-D | EGR boost solenoid | — | — | — | — | GyB | single_source |
| OEM-3-E | NC | — | — | — | — | unverified | |
| OEM-3-F | Ignition 1 (coils 1+4, wasted spark) | ignition_out | SHADOW8-B-27 | Ignition TTL cylinder 1 | ignition_out | BrW | single_source |
| OEM-3-G | NC | — | — | — | — | unverified | |
| OEM-3-H | Main relay | low_side_out | SHADOW8-B-14 | Aux output 5 | switch_out | LOr | single_source |
| OEM-3-I | Ignition 2 (coils 2+3, wasted spark) | ignition_out | SHADOW8-B-28 | Ignition TTL cylinder 2 | ignition_out | BY | single_source |
| OEM-3-J | Front O2 heater | low_side_out | SHADOW8-B-16 | Aux output 7 | switch_out | BOr | single_source |
| OEM-3-K | EVAP leak detection pump | low_side_out | — | — | — | YB | single_source |
| OEM-3-L | NC | — | — | — | — | unverified | |
| OEM-3-M | Alternator control | low_side_out | — | — | — | GyR | single_source |
| OEM-3-N | NC | — | — | — | — | unverified | |
| OEM-3-O | Tachometer output | tacho_out | — | — | — | GOr | single_source |
| OEM-3-P | Rear O2 heater | low_side_out | SHADOW8-B-17 | Aux output 8 | switch_out | WB | single_source |
| OEM-3-Q | Data link connector (K-line) | serial | — | — | — | GW | single_source |
| OEM-3-R | NC | — | — | — | — | unverified | |
| OEM-3-S | Immobiliser | digital_in | SHADOW8-A-27 | Digital input 2 | digital_in | RB | single_source |
| OEM-3-T | Vehicle speed | digital_in | SHADOW8-A-26 | Digital input 1 | digital_in | GR | single_source |
| OEM-3-U | Charge lamp | low_side_out | — | — | — | BrR | single_source |
| OEM-3-V | Cam position (CMP) | trigger_in | SHADOW8-A-6 | Sync position sensor | trigger_in | GyL | single_source |
| OEM-3-W | NC | — | — | — | — | unverified | |
| OEM-3-X | NC | — | — | — | — | unverified | |
| OEM-3-Y | Crank position (CKP) | trigger_in | SHADOW8-A-5 | Crank position sensor | trigger_in | VW | single_source |
| OEM-3-Z | NC | — | — | — | — | unverified | |
| OEM-4-A | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | BL | single_source |
| OEM-4-AA | Rear O2 signal | lambda_nb_in | SHADOW8-A-13 | Analog voltage 4 | analog_in | R | single_source |
| OEM-4-AB | NC | — | — | — | — | unverified | |
| OEM-4-AC | TCM (automatic only) | — | — | — | — | VG | single_source |
| OEM-4-AD | Fuel level | analog_in | SHADOW8-A-20 | Analog voltage 8 (switchable 1k pull-up) | analog_in | BrB | single_source |
| OEM-4-AE | Pressure sensor (Mazda: EGR boost sensor) | analog_in | SHADOW8-A-11 | Analog voltage 2 | analog_in | LY | corroborated |
| OEM-4-AF | ECU power +14V (main relay) | power_in | SHADOW8-A-1 + SHADOW8-B-26 | ECU supply + Aux 9–12 power supply | power_in | WR | single_source |
| OEM-4-AG | Constant +12V | power_in | SHADOW8-B-1 | Battery constant (HOT) supply | power_in | LR | single_source |
| OEM-4-AH | EVAP leak detection pump solenoid valve | low_side_out | — | — | — | RG | single_source |
| OEM-4-B | Brake switch | digital_in | SHADOW8-A-28 | Digital input 3 | digital_in | G | single_source |
| OEM-4-C | Power steering pressure switch | digital_in | SHADOW8-A-29 | Digital input 4 | digital_in | Br | single_source |
| OEM-4-D | VVT oil-control solenoid +12V feed | power_in | SHADOW8-A-1 + SHADOW8-B-26 | ECU supply + Aux 9–12 power supply | power_in | Y | single_source |
| OEM-4-E | Diagnostic (DLC TEN) (NA) | serial | — | — | — | LY | single_source |
| OEM-4-F | A/C request | digital_in | SHADOW8-A-30 | Digital input 5 | digital_in | LgB | single_source |
| OEM-4-G | NC | — | — | — | — | unverified | |
| OEM-4-H | Neutral switch | digital_in | SHADOW8-A-31 | Digital input 6 | digital_in | V | single_source |
| OEM-4-I | Clutch switch | digital_in | SHADOW8-B-18 | Digital input 7 | digital_in | WG | single_source |
| OEM-4-J | VTCS vacuum switch | digital_in | SHADOW8-B-19 | Digital input 8 | digital_in | Or | single_source |
| OEM-4-K | NC | — | — | — | — | unverified | |
| OEM-4-L | +5V sensor supply | vref | SHADOW8-A-3 | 5.0V sensor supply | vref | LgR | single_source |
| OEM-4-M | Knock sensor | knock_in | SHADOW8-A-16 | Knock 1 + | knock_in | W | single_source |
| OEM-4-N | Intake air temperature (IAT) | temp_in | SHADOW8-A-19 | Analog voltage 7 (switchable 1k pull-up) | analog_in | PL | single_source |
| OEM-4-O | Signal ground | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | BR | single_source |
| OEM-4-P | Coolant temperature (ECT) | temp_in | SHADOW8-A-18 | Analog voltage 6 | analog_in | RL | single_source |
| OEM-4-Q | NC | — | — | — | — | unverified | |
| OEM-4-R | VVT oil-control solenoid (low-side control) | low_side_out | — | — | — | VY | corroborated |
| OEM-4-S | Ignition switch (IG1) sense | digital_in | SHADOW8-B-21 | Digital input 10 / ignition switch | digital_in | BW | single_source |
| OEM-4-T | Generator output voltage (terminal P) | — | — | — | — | Gy | single_source |
| OEM-4-U | NC | — | — | — | — | unverified | |
| OEM-4-V | Throttle position (TPS) | analog_in | SHADOW8-A-12 | Analog voltage 3 | analog_in | GB | single_source |
| OEM-4-W | Front O2 signal | lambda_nb_in | SHADOW8-A-14 | Analog voltage 5 | analog_in | L | single_source |
| OEM-4-X | Mass air flow (MAF) | analog_in | SHADOW8-A-10 | Analog voltage 1 | analog_in | P | single_source |
| OEM-4-Y | NC | — | — | — | — | unverified | |
| OEM-4-Z | TCM (automatic only) | — | — | — | — | PB | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-2-P | SP-14V-1 | 0.85 | no route | ISC valve +14V feed | — | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | no route | ECU power +14V (main relay) | — | |
| W3 | OEM-4-D | SP-14V-1 | 0.85 | no route | VVT oil-control solenoid +12V feed | — | |
| W4 | SP-14V-1 | SHADOW8-A-1 | 0.85 | no route | ECU supply | — | |
| W5 | SP-14V-1 | SHADOW8-B-26 | 0.85 | no route | Aux 9–12 power supply | — | |
| W6 | OEM-4-AG | SHADOW8-B-1 | 0.85 | no route | Constant +12V | — | |
| W7 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | OEM-3-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W9 | OEM-4-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W10 | SP-GND-1 | SHADOW8-A-34 | 0.85 | no route | Ground 2 | — | |
| W11 | SP-GND-1 | SHADOW8-A-9 | 0.85 | no route | Ground 1 | — | |
| W12 | OEM-4-O | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W13 | SP-0V-1 | SHADOW8-A-4 | 0.5 | no route | 0V analog reference | — | |
| W14 | SP-0V-1 | SHADOW8-A-7 | 0.5 | no route | Trigger ground | — | |
| W15 | OEM-4-L | SHADOW8-A-3 | 0.5 | no route | +5V sensor supply | — | |
| W16 | OEM-3-Y | SHADOW8-A-5 | 0.5 | no route | Crank position (CKP) | — | |
| W17 | OEM-3-V | SHADOW8-A-6 | 0.5 | no route | Cam position (CMP) | — | |
| W18 | OEM-4-M | SHADOW8-A-16 | 0.5 | no route | Knock sensor | — | |
| W19 | OEM-3-F | SHADOW8-B-27 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W20 | OEM-3-I | SHADOW8-B-28 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W21 | OEM-2-A | SHADOW8-B-2 | 0.5 | no route | Injector 1 | — | |
| W22 | OEM-2-D | SHADOW8-B-3 | 0.5 | no route | Injector 2 | — | |
| W23 | OEM-2-G | SHADOW8-B-4 | 0.5 | no route | Injector 3 | — | |
| W24 | OEM-2-J | SHADOW8-B-5 | 0.5 | no route | Injector 4 | — | |
| W25 | OEM-4-S | SHADOW8-B-21 | 0.5 | no route | Ignition switch (IG1) sense | — | |
| W26 | OEM-2-B | SHADOW8-B-10 | 0.5 | no route | Cooling fan relay | — | |
| W27 | OEM-2-C | SHADOW8-B-11 | 0.5 | no route | Condenser fan relay | — | |
| W28 | OEM-2-K | SHADOW8-B-12 | 0.5 | no route | A/C clutch relay | — | |
| W29 | OEM-2-M | SHADOW8-B-13 | 0.5 | no route | Fuel pump relay | — | |
| W30 | OEM-3-H | SHADOW8-B-14 | 0.5 | no route | Main relay | — | |
| W31 | OEM-2-O | SHADOW8-B-15 | 0.5 | no route | Fuel pump relay (non-immobiliser) | — | |
| W32 | OEM-3-J | SHADOW8-B-16 | 0.5 | no route | Front O2 heater | — | |
| W33 | OEM-3-P | SHADOW8-B-17 | 0.5 | no route | Rear O2 heater | — | |
| W34 | OEM-2-Q | SHADOW8-B-6 | 0.5 | no route | ISC valve low side | — | |
| W35 | OEM-2-E | SHADOW8-B-7 | 0.5 | no route | EGR valve | — | |
| W36 | OEM-2-F | SHADOW8-B-8 | 0.5 | no route | EGR valve | — | |
| W37 | OEM-2-H | SHADOW8-B-9 | 0.5 | no route | EGR valve | — | |
| W38 | OEM-2-I | SHADOW8-B-22 | 0.5 | no route | EGR valve | — | |
| W39 | OEM-2-N | SHADOW8-B-23 | 0.5 | no route | VTCS solenoid (intake butterflies) | — | |
| W40 | OEM-2-R | SHADOW8-B-24 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W41 | OEM-3-C | SHADOW8-B-25 | 0.5 | no route | Purge solenoid valve | — | |
| W42 | OEM-4-X | SHADOW8-A-10 | 0.5 | no route | Mass air flow (MAF) | — | |
| W43 | OEM-4-AE | SHADOW8-A-11 | 0.5 | no route | Pressure sensor (Mazda: EGR boost sensor) | — | |
| W44 | OEM-4-V | SHADOW8-A-12 | 0.5 | no route | Throttle position (TPS) | — | |
| W45 | OEM-4-AA | SHADOW8-A-13 | 0.5 | no route | Rear O2 signal | — | |
| W46 | OEM-4-W | SHADOW8-A-14 | 0.5 | no route | Front O2 signal | — | |
| W47 | OEM-4-P | SHADOW8-A-18 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W48 | OEM-4-N | SHADOW8-A-19 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W49 | OEM-4-AD | SHADOW8-A-20 | 0.5 | no route | Fuel level | — | |
| W50 | OEM-3-T | SHADOW8-A-26 | 0.5 | no route | Vehicle speed | — | |
| W51 | OEM-3-S | SHADOW8-A-27 | 0.5 | no route | Immobiliser | — | |
| W52 | OEM-4-B | SHADOW8-A-28 | 0.5 | no route | Brake switch | — | |
| W53 | OEM-4-C | SHADOW8-A-29 | 0.5 | no route | Power steering pressure switch | — | |
| W54 | OEM-4-F | SHADOW8-A-30 | 0.5 | no route | A/C request | — | |
| W55 | OEM-4-H | SHADOW8-A-31 | 0.5 | no route | Neutral switch | — | |
| W56 | OEM-4-I | SHADOW8-B-18 | 0.5 | no route | Clutch switch | — | |
| W57 | OEM-4-J | SHADOW8-B-19 | 0.5 | no route | VTCS vacuum switch | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 1.000 | ea |
| connector | 4-1437290-1 | TE | Superseal 1.0 34-way plug, Key 2 | 1.000 | ea |
| terminal | 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 50.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (15)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | NET_FAMILY | OEM-2-I ↔ SHADOW8-B-22 | OEM-2-I "EGR valve" [low_side_out] is wired to SHADOW8-B-22 "Aux output 9" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-2-N ↔ SHADOW8-B-23 | OEM-2-N "VTCS solenoid (intake butterflies)" [low_side_out] is wired to SHADOW8-B-23 "Aux output 10" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-2-R ↔ SHADOW8-B-24 | OEM-2-R "Malfunction indicator lamp (MIL)" [low_side_out] is wired to SHADOW8-B-24 "Aux output 11" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-C ↔ SHADOW8-B-25 | OEM-3-C "Purge solenoid valve" [low_side_out] is wired to SHADOW8-B-25 "Aux output 12" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| info | NET_FAMILY | OEM-2-E ↔ SHADOW8-B-7 | OEM-2-E "EGR valve" [low_side_out] is wired to SHADOW8-B-7 "Injector cylinder 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-F ↔ SHADOW8-B-8 | OEM-2-F "EGR valve" [low_side_out] is wired to SHADOW8-B-8 "Injector cylinder 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-H ↔ SHADOW8-B-9 | OEM-2-H "EGR valve" [low_side_out] is wired to SHADOW8-B-9 "Injector cylinder 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-O ↔ SHADOW8-B-15 | OEM-2-O "Fuel pump relay (non-immobiliser)" [low_side_out] is wired to SHADOW8-B-15 "Aux output 6" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-2-Q ↔ SHADOW8-B-6 | OEM-2-Q "ISC valve low side" [low_side_out] is wired to SHADOW8-B-6 "Injector cylinder 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-3-H ↔ SHADOW8-B-14 | OEM-3-H "Main relay" [low_side_out] is wired to SHADOW8-B-14 "Aux output 5" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-3-J ↔ SHADOW8-B-16 | OEM-3-J "Front O2 heater" [low_side_out] is wired to SHADOW8-B-16 "Aux output 7" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-3-P ↔ SHADOW8-B-17 | OEM-3-P "Rear O2 heater" [low_side_out] is wired to SHADOW8-B-17 "Aux output 8" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-4-N ↔ SHADOW8-A-19 | OEM-4-N "Intake air temperature (IAT)" [temp_in] is wired to SHADOW8-A-19 "Analog voltage 7 (switchable 1k pull-up)" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-4-P ↔ SHADOW8-A-18 | OEM-4-P "Coolant temperature (ECT)" [temp_in] is wired to SHADOW8-A-18 "Analog voltage 6" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | UNMAPPED | OEM | 12 optional OEM pins are not mapped: OEM-3-D EGR boost solenoid; OEM-3-K EVAP leak detection pump; OEM-3-M Alternator control; OEM-3-O Tachometer output; OEM-3-Q Data link connector (K-line); OEM-3-U Charge lamp; OEM-4-AC TCM (automatic only); OEM-4-AH EVAP leak detection pump solenoid valve; OEM-4-E Diagnostic (DLC TEN) (NA); OEM-4-R VVT oil-control solenoid (low-side control); OEM-4-T Generator output voltage (terminal P); OEM-4-Z TCM (automatic only) |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Not wired: - SHADOW8-A 17: Knock 1 − left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors - OEM-3 K: EVAP leak detection pump: no free low_side/ls_hs/injector/hbridge on Emtron Shadow 8 - OEM-3 M: Alternator control: no free low_side/ls_hs/injector/hbridge on Emtron Shadow 8 - OEM-3 U: Charge lamp: no free low_side/ls_hs/injector/hbridge on Emtron Shadow 8 - OEM-4 AH: EVAP leak detection pump solenoid valve: no free low_side/ls_hs/injector/hbridge on Emtron Shadow 8 - OEM-4 R: VVT oil-control solenoid (low-side control): no free low_side/ls_hs/injector/hbridge on Emtron Shadow 8 - OEM-3 O: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on Emtron Shadow 8 - OEM-3 Q: Data link connector (K-line): no free k_line on Emtron Shadow 8 - OEM-4 E: Diagnostic (DLC TEN) (NA): no free k_line on Emtron Shadow 8 - OEM-3 D: EGR boost solenoid: not classified in the library; wire by hand - OEM-4 AC: TCM (automatic only): not classified in the library; wire by hand - OEM-4 T: Generator output voltage (terminal P): not classified in the library; wire by hand - OEM-4 Z: TCM (automatic only): not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | oem_manual | 2005 Mazda MX-5 Miata Engine Performance Control System (PCM terminal voltage reference, BP and BP WITH TC) | https://trull.org/alex/pubmirror/www.mellens.net/mazda/Mazda-Miata-2005/engine_control_system.pdf | — | — | — |
| 4 | vendor_doc | Adaptronic eSel039 Select Plugin ECU for Mazda MX5 / Miata NB8B/C (OEM ECU pinout) | https://www.miataturbo.net/attachments/ecus-tuning-54/04-msm-ecu-pinout-104032/nb8bc_oem_ecu_pinouts-224948d1602912806 | — | — | — |
| 4 | vendor_doc | Emtron Shadow 8 ECU datasheet | https://docs.emtronaustralia.com.au/engine-management/datasheets/shadow-8-datasheet/index.html | archive | 2026-10-05 | f004c9a8d60c |
| 4 | vendor_doc | Emtron Shadow 8 pinout | https://docs.emtronaustralia.com.au/engine-management/wiring/shadow-8/shadow-8-pinout/index.html | archive | 2026-10-05 | f510053951c7 |
| 4 | vendor_doc | Link G4X MX5NB2X install manual (NB2 2001-05) | https://linkecu.com/documentation/MX5XNB2.pdf | archive | 2026-10-05 | 741efdd9f2c8 |
| 4 | oem_manual | Mazda MX-5 NB2 (2003) wiring diagram — engine / starting / charging | https://web.archive.org/web/20191104195207/http://mellens.net/mazda/mazda_miata_extra_manual/2003_wiring.pdf | — | 2026-10-05 | 5ee0777f12c1 |
| 2 | expert_report | Justin Barrera — Miata NA/NB wiring corrections | — | — | — | — |