MX-5 Miata NA6 1990-93 (B6-ZE, 1.6) → Emtron Shadow 8 (auto)
MX-5 Miata NA6 1990-93 (B6-ZE, 1.6) — Emtron — Shadow 8
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-08
Before you start
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 1: read the Findings page before cutting any wire |
| Size of the job | 34 wires · 7 connectors · 5 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-1-B | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | SP-14V-1 | SHADOW8-A-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | SHADOW8-B-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-1-A | SHADOW8-B-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-2-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-2-B | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-2-C | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-2-D | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | SHADOW8-A-34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | SHADOW8-A-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-2-F | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-0V-1 | SHADOW8-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-0V-1 | SHADOW8-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-2-K | SHADOW8-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-2-E | SHADOW8-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-2-G | SHADOW8-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-1-G | SHADOW8-B-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-1-H | SHADOW8-B-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-2-U | SHADOW8-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-2-V | SHADOW8-B-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-2-Y | SHADOW8-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-2-Z | SHADOW8-B-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-1-E | SHADOW8-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-2-I | SHADOW8-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-2-O | SHADOW8-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-2-N | SHADOW8-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-2-Q | SHADOW8-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-2-P | SHADOW8-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-1-C | SHADOW8-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-1-N | SHADOW8-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-1-P | SHADOW8-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-1-Q | SHADOW8-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-1-V | SHADOW8-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-2-L | SHADOW8-A-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
Bench test (before first power-up)
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-B-1 | SHADOW8-A-34 | open (OL) | +12 V supply must not touch power 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-4 | SHADOW8-A-3 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 8 | SHADOW8-B-1 | SHADOW8-A-3 | open (OL) | +12 V supply must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
OEM-1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Constant +12V | — | W4 | — | 0.85 | SHADOW8-B-1 | — | — | — |
| B | ECU power +14V (main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| C | Start signal | — | W29 | — | 0.5 | SHADOW8-A-26 | — | — | — |
| E | Malfunction indicator lamp (MIL) | — | W23 | — | 0.5 | SHADOW8-B-10 | — | — | — |
| G | Ignition 1 (coils 1+4, wasted spark) | — | W17 | — | 0.5 | SHADOW8-B-27 | — | — | — |
| H | Ignition 2 (coils 2+3, wasted spark) | — | W18 | — | 0.5 | SHADOW8-B-28 | — | — | — |
| N | Wide-open throttle switch | — | W30 | — | 0.5 | SHADOW8-A-27 | — | — | — |
| P | Power steering pressure switch | — | W31 | — | 0.5 | SHADOW8-A-28 | — | — | — |
| Q | A/C request | — | W32 | — | 0.5 | SHADOW8-A-29 | — | — | — |
| V | Neutral/clutch switch | — | W33 | — | 0.5 | SHADOW8-A-30 | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| C | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| D | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| E | Crank position (CAS NE) | — | W15 | — | 0.5 | SHADOW8-A-5 | — | — | — |
| F | AFM ground | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| G | Cam position (CAS G) | — | W16 | — | 0.5 | SHADOW8-A-6 | — | — | — |
| I | Tachometer output | — | W24 | — | 0.5 | SHADOW8-B-11 | — | — | — |
| K | +5V sensor supply | — | W14 | — | 0.5 | SHADOW8-A-3 | — | — | — |
| L | Idle switch (TPS) | — | W34 | — | 0.5 | SHADOW8-A-31 | — | — | — |
| N | O2 sensor | — | W26 | — | 0.5 | SHADOW8-A-11 | — | — | — |
| O | Air flow meter (AFM) | — | W25 | — | 0.5 | SHADOW8-A-10 | — | — | — |
| P | Intake air temperature (IAT) | — | W28 | — | 0.5 | SHADOW8-A-13 | — | — | — |
| Q | Coolant temperature (ECT) | — | W27 | — | 0.5 | SHADOW8-A-12 | — | — | — |
| U | Injector 1 | — | W19 | — | 0.5 | SHADOW8-B-2 | — | — | — |
| V | Injector 2 | — | W20 | — | 0.5 | SHADOW8-B-3 | — | — | — |
| Y | Injector 3 | — | W21 | — | 0.5 | SHADOW8-B-4 | — | — | — |
| Z | Injector 4 | — | W22 | — | 0.5 | SHADOW8-B-5 | — | — | — |
SHADOW8-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU supply | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | 8.0V sensor supply | — | — | — | — | — | — | — | — |
| 3 | 5.0V sensor supply | — | W14 | — | 0.5 | OEM-2-K | — | — | — |
| 4 | 0V analog reference | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Crank position sensor | — | W15 | — | 0.5 | OEM-2-E | — | — | — |
| 6 | Sync position sensor | — | W16 | — | 0.5 | OEM-2-G | — | — | — |
| 7 | Trigger ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Shield | — | — | — | — | — | — | — | — |
| 9 | Ground 1 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Analog voltage 1 | — | W25 | — | 0.5 | OEM-2-O | — | — | — |
| 11 | Analog voltage 2 | — | W26 | — | 0.5 | OEM-2-N | — | — | — |
| 12 | Analog voltage 3 | — | W27 | — | 0.5 | OEM-2-Q | — | — | — |
| 13 | Analog voltage 4 | — | W28 | — | 0.5 | OEM-2-P | — | — | — |
| 14 | Analog voltage 5 | — | — | — | — | — | — | — | — |
| 15 | CAN bus 1 high | — | — | — | — | — | — | — | — |
| 16 | Knock 1 + | — | — | — | — | — | — | — | — |
| 17 | Knock 1 − | — | — | — | — | — | — | — | — |
| 18 | Analog voltage 6 | — | — | — | — | — | — | — | — |
| 19 | Analog voltage 7 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 20 | Analog voltage 8 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 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 | — | W29 | — | 0.5 | OEM-1-C | — | — | — |
| 27 | Digital input 2 | — | W30 | — | 0.5 | OEM-1-N | — | — | — |
| 28 | Digital input 3 | — | W31 | — | 0.5 | OEM-1-P | — | — | — |
| 29 | Digital input 4 | — | W32 | — | 0.5 | OEM-1-Q | — | — | — |
| 30 | Digital input 5 | — | W33 | — | 0.5 | OEM-1-V | — | — | — |
| 31 | Digital input 6 | — | W34 | — | 0.5 | OEM-2-L | — | — | — |
| 32 | CAN bus 2 high | — | — | — | — | — | — | — | — |
| 33 | CAN bus 2 low | — | — | — | — | — | — | — | — |
| 34 | Ground 2 | — | W9 | — | 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 | — | W4 | — | 0.85 | OEM-1-A | — | — | — |
| 2 | Injector cylinder 1 | — | W19 | — | 0.5 | OEM-2-U | — | — | — |
| 3 | Injector cylinder 2 | — | W20 | — | 0.5 | OEM-2-V | — | — | — |
| 4 | Injector cylinder 3 | — | W21 | — | 0.5 | OEM-2-Y | — | — | — |
| 5 | Injector cylinder 4 | — | W22 | — | 0.5 | OEM-2-Z | — | — | — |
| 6 | Injector cylinder 5 | — | — | — | — | — | — | — | — |
| 7 | Injector cylinder 6 | — | — | — | — | — | — | — | — |
| 8 | Injector cylinder 7 | — | — | — | — | — | — | — | — |
| 9 | Injector cylinder 8 | — | — | — | — | — | — | — | — |
| 10 | Aux output 1 | — | W23 | — | 0.5 | OEM-1-E | — | — | — |
| 11 | Aux output 2 | — | W24 | — | 0.5 | OEM-2-I | — | — | — |
| 12 | Aux output 3 | — | — | — | — | — | — | — | — |
| 13 | Aux output 4 | — | — | — | — | — | — | — | — |
| 14 | Aux output 5 | — | — | — | — | — | — | — | — |
| 15 | Aux output 6 | — | — | — | — | — | — | — | — |
| 16 | Aux output 7 | — | — | — | — | — | — | — | — |
| 17 | Aux output 8 | — | — | — | — | — | — | — | — |
| 18 | Digital input 7 | — | — | — | — | — | — | — | — |
| 19 | Digital input 8 | — | — | — | — | — | — | — | — |
| 20 | Digital input 9 | — | — | — | — | — | — | — | — |
| 21 | Digital input 10 / ignition switch | — | — | — | — | — | — | — | — |
| 22 | Aux output 9 | — | — | — | — | — | — | — | — |
| 23 | Aux output 10 | — | — | — | — | — | — | — | — |
| 24 | Aux output 11 | — | — | — | — | — | — | — | — |
| 25 | Aux output 12 | — | — | — | — | — | — | — | — |
| 26 | Aux 9–12 power supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | Ignition TTL cylinder 1 | — | W17 | — | 0.5 | OEM-1-G | — | — | — |
| 28 | Ignition TTL cylinder 2 | — | W18 | — | 0.5 | OEM-1-H | — | — | — |
| 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 | SHADOW8-A-4 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-2-F | — | — | — |
| 1 | — | — | W13 | — | 0.5 | SHADOW8-A-7 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-1-B | — | — | — |
| 1 | — | — | W2 | — | 0.85 | SHADOW8-A-1 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | SHADOW8-B-26 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-2-A | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-2-B | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-2-C | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-2-D | — | — | — |
| 1 | — | — | W9 | — | 0.85 | SHADOW8-A-34 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | SHADOW8-A-9 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-1-A | Constant +12V | power_in | SHADOW8-B-1 | Battery constant (HOT) supply | power_in | single_source | |
| OEM-1-B | ECU power +14V (main relay) | power_in | SHADOW8-A-1 + SHADOW8-B-26 | ECU supply + Aux 9–12 power supply | power_in | single_source | |
| OEM-1-C | Start signal | digital_in | SHADOW8-A-26 | Digital input 1 | digital_in | single_source | |
| OEM-1-E | Malfunction indicator lamp (MIL) | low_side_out | SHADOW8-B-10 | Aux output 1 | low_side_out | single_source | |
| OEM-1-G | Ignition 1 (coils 1+4, wasted spark) | ignition_out | SHADOW8-B-27 | Ignition TTL cylinder 1 | ignition_out | single_source | |
| OEM-1-H | Ignition 2 (coils 2+3, wasted spark) | ignition_out | SHADOW8-B-28 | Ignition TTL cylinder 2 | ignition_out | single_source | |
| OEM-1-N | Wide-open throttle switch | digital_in | SHADOW8-A-27 | Digital input 2 | digital_in | single_source | |
| OEM-1-P | Power steering pressure switch | digital_in | SHADOW8-A-28 | Digital input 3 | digital_in | single_source | |
| OEM-1-Q | A/C request | digital_in | SHADOW8-A-29 | Digital input 4 | digital_in | single_source | |
| OEM-1-V | Neutral/clutch switch | digital_in | SHADOW8-A-30 | Digital input 5 | digital_in | single_source | |
| OEM-2-A | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | single_source | |
| OEM-2-B | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | single_source | |
| OEM-2-C | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | single_source | |
| OEM-2-D | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | single_source | |
| OEM-2-E | Crank position (CAS NE) | trigger_in | SHADOW8-A-5 | Crank position sensor | trigger_in | single_source | |
| OEM-2-F | AFM ground | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | single_source | |
| OEM-2-G | Cam position (CAS G) | trigger_in | SHADOW8-A-6 | Sync position sensor | trigger_in | single_source | |
| OEM-2-I | Tachometer output | tacho_out | SHADOW8-B-11 | Aux output 2 | low_side_out | single_source | |
| OEM-2-K | +5V sensor supply | vref | SHADOW8-A-3 | 5.0V sensor supply | vref | single_source | |
| OEM-2-L | Idle switch (TPS) | digital_in | SHADOW8-A-31 | Digital input 6 | digital_in | single_source | |
| OEM-2-N | O2 sensor | lambda_nb_in | SHADOW8-A-11 | Analog voltage 2 | analog_in | single_source | |
| OEM-2-O | Air flow meter (AFM) | analog_in | SHADOW8-A-10 | Analog voltage 1 | analog_in | single_source | |
| OEM-2-P | Intake air temperature (IAT) | temp_in | SHADOW8-A-13 | Analog voltage 4 | analog_in | single_source | |
| OEM-2-Q | Coolant temperature (ECT) | temp_in | SHADOW8-A-12 | Analog voltage 3 | analog_in | single_source | |
| OEM-2-U | Injector 1 | injector_out | SHADOW8-B-2 | Injector cylinder 1 | injector_out | single_source | |
| OEM-2-V | Injector 2 | injector_out | SHADOW8-B-3 | Injector cylinder 2 | injector_out | single_source | |
| OEM-2-Y | Injector 3 | injector_out | SHADOW8-B-4 | Injector cylinder 3 | injector_out | single_source | |
| OEM-2-Z | Injector 4 | injector_out | SHADOW8-B-5 | Injector cylinder 4 | injector_out | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-1-B | SP-14V-1 | 0.85 | no route | ECU power +14V (main relay) | — | |
| W2 | SP-14V-1 | SHADOW8-A-1 | 0.85 | no route | ECU supply | — | |
| W3 | SP-14V-1 | SHADOW8-B-26 | 0.85 | no route | Aux 9–12 power supply | — | |
| W4 | OEM-1-A | SHADOW8-B-1 | 0.85 | no route | Constant +12V | — | |
| W5 | OEM-2-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-2-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | OEM-2-C | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | OEM-2-D | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W9 | SP-GND-1 | SHADOW8-A-34 | 0.85 | no route | Ground 2 | — | |
| W10 | SP-GND-1 | SHADOW8-A-9 | 0.85 | no route | Ground 1 | — | |
| W11 | OEM-2-F | SP-0V-1 | 0.5 | no route | AFM ground | — | |
| W12 | SP-0V-1 | SHADOW8-A-4 | 0.5 | no route | 0V analog reference | — | |
| W13 | SP-0V-1 | SHADOW8-A-7 | 0.5 | no route | Trigger ground | — | |
| W14 | OEM-2-K | SHADOW8-A-3 | 0.5 | no route | +5V sensor supply | — | |
| W15 | OEM-2-E | SHADOW8-A-5 | 0.5 | no route | Crank position (CAS NE) | — | |
| W16 | OEM-2-G | SHADOW8-A-6 | 0.5 | no route | Cam position (CAS G) | — | |
| W17 | OEM-1-G | SHADOW8-B-27 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W18 | OEM-1-H | SHADOW8-B-28 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W19 | OEM-2-U | SHADOW8-B-2 | 0.5 | no route | Injector 1 | — | |
| W20 | OEM-2-V | SHADOW8-B-3 | 0.5 | no route | Injector 2 | — | |
| W21 | OEM-2-Y | SHADOW8-B-4 | 0.5 | no route | Injector 3 | — | |
| W22 | OEM-2-Z | SHADOW8-B-5 | 0.5 | no route | Injector 4 | — | |
| W23 | OEM-1-E | SHADOW8-B-10 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W24 | OEM-2-I | SHADOW8-B-11 | 0.5 | no route | Tachometer output | — | |
| W25 | OEM-2-O | SHADOW8-A-10 | 0.5 | no route | Air flow meter (AFM) | — | |
| W26 | OEM-2-N | SHADOW8-A-11 | 0.5 | no route | O2 sensor | — | |
| W27 | OEM-2-Q | SHADOW8-A-12 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W28 | OEM-2-P | SHADOW8-A-13 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W29 | OEM-1-C | SHADOW8-A-26 | 0.5 | no route | Start signal | — | |
| W30 | OEM-1-N | SHADOW8-A-27 | 0.5 | no route | Wide-open throttle switch | — | |
| W31 | OEM-1-P | SHADOW8-A-28 | 0.5 | no route | Power steering pressure switch | — | |
| W32 | OEM-1-Q | SHADOW8-A-29 | 0.5 | no route | A/C request | — | |
| W33 | OEM-1-V | SHADOW8-A-30 | 0.5 | no route | Neutral/clutch switch | — | |
| W34 | OEM-2-L | SHADOW8-A-31 | 0.5 | no route | Idle switch (TPS) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 174515-6 | TE | AMP Multilock .040/.070 hybrid 22-pin female harness plug (Miata NA/NB ECU) | 1.000 | ea |
| connector | 174516-6 | TE | AMP Multilock .040/.070 hybrid 26-pin female harness plug (Miata NA/NB ECU) | 1.000 | ea |
| 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) | 28.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (4)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | PHYS_REQUIRED_OPEN | SHADOW8-B-21 | SHADOW8-B-21 "Digital input 10 / ignition switch" is required but not wired. |
| info | NET_FAMILY | OEM-2-I ↔ SHADOW8-B-11 | OEM-2-I "Tachometer output" [tacho_out] is wired to SHADOW8-B-11 "Aux output 2" [low_side_out]. Tacho as a low-side output: check the tach needs a pull-up. |
| info | NET_FAMILY | OEM-2-P ↔ SHADOW8-A-13 | OEM-2-P "Intake air temperature (IAT)" [temp_in] is wired to SHADOW8-A-13 "Analog voltage 4" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-2-Q ↔ SHADOW8-A-12 | OEM-2-Q "Coolant temperature (ECT)" [temp_in] is wired to SHADOW8-A-12 "Analog voltage 3" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Open items: - SHADOW8-B 21: Digital input 10 / ignition switch: required by Emtron Shadow 8 but no stock pin feeds it; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 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 MX5X install manual (NA 1.6/1.8) | https://linkecu.com/documentation/MX5X.pdf | archive | 2026-10-05 | b7f730de9f6e |