Mazda RX-7 FC 1986-92 (13B-T Turbo II) → Emtron Shadow 8 (auto)
Mazda RX-7 FC 1986-92 (13B-T Turbo II) — 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 | 50 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-3-I | 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-3-J | SHADOW8-B-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-2-R | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-3-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-3-G | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | SHADOW8-A-34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | SHADOW8-A-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-1-P | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-1-Q | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-2-C | 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-2-A | SHADOW8-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-1-T | SHADOW8-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-1-N | SHADOW8-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-1-R | SHADOW8-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-1-U | SHADOW8-B-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-1-V | SHADOW8-B-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-1-X | SHADOW8-B-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-3-E | SHADOW8-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-3-H | SHADOW8-B-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-3-C | SHADOW8-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-3-F | SHADOW8-B-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-1-F | SHADOW8-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-3-D | SHADOW8-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-1-C | SHADOW8-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-1-S | SHADOW8-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-2-K | SHADOW8-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-2-M | SHADOW8-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-2-N | SHADOW8-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-2-O | SHADOW8-B-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-2-P | SHADOW8-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-2-Q | SHADOW8-B-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-2-E | SHADOW8-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-2-B | SHADOW8-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-2-G | SHADOW8-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-2-D | SHADOW8-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-2-I | SHADOW8-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-2-J | SHADOW8-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-2-L | SHADOW8-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-2-F | SHADOW8-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-2-H | SHADOW8-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-1-O | SHADOW8-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-1-E | SHADOW8-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-1-G | SHADOW8-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-1-H | SHADOW8-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-1-L | SHADOW8-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-3-B | 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-3 | SHADOW8-A-34 | open (OL) | 5 V sensor reference must not touch power ground | |
| 2 | SHADOW8-A-3 | SHADOW8-A-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 3 | SHADOW8-A-3 | SHADOW8-B-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 4 | SHADOW8-A-34 | SHADOW8-A-1 | open (OL) | power ground must not touch +12 V supply | |
| 5 | SHADOW8-A-34 | SHADOW8-B-1 | open (OL) | power ground must not touch +12 V supply | |
| 6 | SHADOW8-A-4 | SHADOW8-A-1 | open (OL) | sensor ground must not touch +12 V supply | |
| 7 | SHADOW8-A-4 | SHADOW8-A-3 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 8 | SHADOW8-A-4 | SHADOW8-B-1 | open (OL) | sensor ground must not touch +12 V supply |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
OEM-1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| C | Air bypass solenoid | — | W28 | — | 0.5 | SHADOW8-B-12 | — | — | — |
| E | A/C request | — | W46 | — | 0.5 | SHADOW8-A-27 | — | — | — |
| F | A/C clutch relay | — | W26 | — | 0.5 | SHADOW8-B-10 | — | — | — |
| G | Neutral switch | — | W47 | — | 0.5 | SHADOW8-A-28 | — | — | — |
| H | Water temperature switch | — | W48 | — | 0.5 | SHADOW8-A-29 | — | — | — |
| L | Clutch switch | — | W49 | — | 0.5 | SHADOW8-A-30 | — | — | — |
| M | Ignition feedback (tacho) | — | — | — | — | — | — | — | — |
| N | CAS 2-tooth (G, cam) | — | W17 | — | 0.5 | SHADOW8-A-6 | — | — | — |
| O | Vehicle speed (mileage sensor) | — | W45 | — | 0.5 | SHADOW8-A-26 | — | — | — |
| P | CAS ground | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| Q | CAS ground | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| R | Knock input | — | W18 | — | 0.5 | SHADOW8-A-16 | — | — | — |
| S | Port air valve | — | W29 | — | 0.5 | SHADOW8-B-13 | — | — | — |
| T | CAS 24-tooth (NE, crank) | — | W16 | — | 0.5 | SHADOW8-A-5 | — | — | — |
| U | Ignition select (trailing rotor) | — | W19 | — | 0.5 | SHADOW8-B-27 | — | — | — |
| V | Ignition leading | — | W20 | — | 0.5 | SHADOW8-B-28 | — | — | — |
| X | Ignition trailing | — | W21 | — | 0.5 | SHADOW8-B-29 | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | 5V sensor supply | — | W15 | — | 0.5 | SHADOW8-A-3 | — | — | — |
| B | MAP (pressure) signal | — | W37 | — | 0.5 | SHADOW8-A-11 | — | — | — |
| C | Sensor ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| D | O2 sensor signal | — | W39 | — | 0.5 | SHADOW8-A-13 | — | — | — |
| E | Airflow signal (AFM) | — | W36 | — | 0.5 | SHADOW8-A-10 | — | — | — |
| F | Variable resistor (tuning) | — | W43 | — | 0.5 | SHADOW8-A-20 | — | — | — |
| G | Throttle position (TPS) | — | W38 | — | 0.5 | SHADOW8-A-12 | — | — | — |
| H | Atmospheric pressure (ATP) | — | W44 | — | 0.5 | SHADOW8-A-21 | — | — | — |
| I | Coolant temperature (ECT) | — | W40 | — | 0.5 | SHADOW8-A-14 | — | — | — |
| J | Inlet air temperature (IAT) | — | W41 | — | 0.5 | SHADOW8-A-18 | — | — | — |
| K | Turbo control valve (boost) | — | W30 | — | 0.5 | SHADOW8-B-14 | — | — | — |
| L | Manifold air temperature (MAT) | — | W42 | — | 0.5 | SHADOW8-A-19 | — | — | — |
| M | Pressure regulator control valve | — | W31 | — | 0.5 | SHADOW8-B-15 | — | — | — |
| N | EGR valve | — | W32 | — | 0.5 | SHADOW8-B-16 | — | — | — |
| O | Switching valve | — | W33 | — | 0.5 | SHADOW8-B-17 | — | — | — |
| P | Relief valve | — | W34 | — | 0.5 | SHADOW8-B-6 | — | — | — |
| Q | Idle control (BAC) | — | W35 | — | 0.5 | SHADOW8-B-7 | — | — | — |
| R | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Starter input | — | W50 | — | 0.5 | SHADOW8-A-31 | — | — | — |
| C | Primary injector 2 | — | W24 | — | 0.5 | SHADOW8-B-4 | — | — | — |
| D | Starter inhibit / fuel pump control | — | W27 | — | 0.5 | SHADOW8-B-11 | — | — | — |
| E | Primary injector 1 | — | W22 | — | 0.5 | SHADOW8-B-2 | — | — | — |
| F | Secondary injector 2 | — | W25 | — | 0.5 | SHADOW8-B-5 | — | — | — |
| G | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| H | Secondary injector 1 | — | W23 | — | 0.5 | SHADOW8-B-3 | — | — | — |
| I | Ignition power (+12V via main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| J | Battery constant (+12V) | — | W4 | — | 0.85 | SHADOW8-B-1 | — | — | — |
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 | — | W15 | — | 0.5 | OEM-2-A | — | — | — |
| 4 | 0V analog reference | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Crank position sensor | — | W16 | — | 0.5 | OEM-1-T | — | — | — |
| 6 | Sync position sensor | — | W17 | — | 0.5 | OEM-1-N | — | — | — |
| 7 | Trigger ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Shield | — | — | — | — | — | — | — | — |
| 9 | Ground 1 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Analog voltage 1 | — | W36 | — | 0.5 | OEM-2-E | — | — | — |
| 11 | Analog voltage 2 | — | W37 | — | 0.5 | OEM-2-B | — | — | — |
| 12 | Analog voltage 3 | — | W38 | — | 0.5 | OEM-2-G | — | — | — |
| 13 | Analog voltage 4 | — | W39 | — | 0.5 | OEM-2-D | — | — | — |
| 14 | Analog voltage 5 | — | W40 | — | 0.5 | OEM-2-I | — | — | — |
| 15 | CAN bus 1 high | — | — | — | — | — | — | — | — |
| 16 | Knock 1 + | — | W18 | — | 0.5 | OEM-1-R | — | — | — |
| 17 | Knock 1 − | — | — | — | — | — | — | — | — |
| 18 | Analog voltage 6 | — | W41 | — | 0.5 | OEM-2-J | — | — | — |
| 19 | Analog voltage 7 (switchable 1k pull-up) | — | W42 | — | 0.5 | OEM-2-L | — | — | — |
| 20 | Analog voltage 8 (switchable 1k pull-up) | — | W43 | — | 0.5 | OEM-2-F | — | — | — |
| 21 | Analog voltage 9 (switchable 1k pull-up) | — | W44 | — | 0.5 | OEM-2-H | — | — | — |
| 22 | Analog voltage 10 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 23 | CAN bus 1 low | — | — | — | — | — | — | — | — |
| 24 | Knock 2 + | — | — | — | — | — | — | — | — |
| 25 | Knock 2 − | — | — | — | — | — | — | — | — |
| 26 | Digital input 1 | — | W45 | — | 0.5 | OEM-1-O | — | — | — |
| 27 | Digital input 2 | — | W46 | — | 0.5 | OEM-1-E | — | — | — |
| 28 | Digital input 3 | — | W47 | — | 0.5 | OEM-1-G | — | — | — |
| 29 | Digital input 4 | — | W48 | — | 0.5 | OEM-1-H | — | — | — |
| 30 | Digital input 5 | — | W49 | — | 0.5 | OEM-1-L | — | — | — |
| 31 | Digital input 6 | — | W50 | — | 0.5 | OEM-3-B | — | — | — |
| 32 | CAN bus 2 high | — | — | — | — | — | — | — | — |
| 33 | CAN bus 2 low | — | — | — | — | — | — | — | — |
| 34 | Ground 2 | — | W8 | — | 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-3-J | — | — | — |
| 2 | Injector cylinder 1 | — | W22 | — | 0.5 | OEM-3-E | — | — | — |
| 3 | Injector cylinder 2 | — | W23 | — | 0.5 | OEM-3-H | — | — | — |
| 4 | Injector cylinder 3 | — | W24 | — | 0.5 | OEM-3-C | — | — | — |
| 5 | Injector cylinder 4 | — | W25 | — | 0.5 | OEM-3-F | — | — | — |
| 6 | Injector cylinder 5 | — | W34 | — | 0.5 | OEM-2-P | — | — | — |
| 7 | Injector cylinder 6 | — | W35 | — | 0.5 | OEM-2-Q | — | — | — |
| 8 | Injector cylinder 7 | — | — | — | — | — | — | — | — |
| 9 | Injector cylinder 8 | — | — | — | — | — | — | — | — |
| 10 | Aux output 1 | — | W26 | — | 0.5 | OEM-1-F | — | — | — |
| 11 | Aux output 2 | — | W27 | — | 0.5 | OEM-3-D | — | — | — |
| 12 | Aux output 3 | — | W28 | — | 0.5 | OEM-1-C | — | — | — |
| 13 | Aux output 4 | — | W29 | — | 0.5 | OEM-1-S | — | — | — |
| 14 | Aux output 5 | — | W30 | — | 0.5 | OEM-2-K | — | — | — |
| 15 | Aux output 6 | — | W31 | — | 0.5 | OEM-2-M | — | — | — |
| 16 | Aux output 7 | — | W32 | — | 0.5 | OEM-2-N | — | — | — |
| 17 | Aux output 8 | — | W33 | — | 0.5 | OEM-2-O | — | — | — |
| 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 | — | W19 | — | 0.5 | OEM-1-U | — | — | — |
| 28 | Ignition TTL cylinder 2 | — | W20 | — | 0.5 | OEM-1-V | — | — | — |
| 29 | Ignition TTL cylinder 3 | — | W21 | — | 0.5 | OEM-1-X | — | — | — |
| 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 | — | — | W13 | — | 0.5 | SHADOW8-A-4 | — | — | — |
| 1 | — | — | W10 | — | 0.5 | OEM-1-P | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-1-Q | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-2-C | — | — | — |
| 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-3-I | — | — | — |
| 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-R | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-3-G | — | — | — |
| 1 | — | — | W8 | — | 0.85 | SHADOW8-A-34 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | SHADOW8-A-9 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-1-C | Air bypass solenoid | low_side_out | SHADOW8-B-12 | Aux output 3 | low_side_out | single_source | |
| OEM-1-E | A/C request | digital_in | SHADOW8-A-27 | Digital input 2 | digital_in | single_source | |
| OEM-1-F | A/C clutch relay | low_side_out | SHADOW8-B-10 | Aux output 1 | low_side_out | single_source | |
| OEM-1-G | Neutral switch | digital_in | SHADOW8-A-28 | Digital input 3 | digital_in | corroborated | |
| OEM-1-H | Water temperature switch | digital_in | SHADOW8-A-29 | Digital input 4 | digital_in | corroborated | |
| OEM-1-L | Clutch switch | digital_in | SHADOW8-A-30 | Digital input 5 | digital_in | single_source | |
| OEM-1-M | Ignition feedback (tacho) | tacho_out | — | — | — | single_source | |
| OEM-1-N | CAS 2-tooth (G, cam) | trigger_in | SHADOW8-A-6 | Sync position sensor | trigger_in | corroborated | |
| OEM-1-O | Vehicle speed (mileage sensor) | digital_in | SHADOW8-A-26 | Digital input 1 | digital_in | single_source | |
| OEM-1-P | CAS ground | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | corroborated | |
| OEM-1-Q | CAS ground | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | corroborated | |
| OEM-1-R | Knock input | knock_in | SHADOW8-A-16 | Knock 1 + | knock_in | corroborated | |
| OEM-1-S | Port air valve | low_side_out | SHADOW8-B-13 | Aux output 4 | low_side_out | single_source | |
| OEM-1-T | CAS 24-tooth (NE, crank) | trigger_in | SHADOW8-A-5 | Crank position sensor | trigger_in | corroborated | |
| OEM-1-U | Ignition select (trailing rotor) | ignition_out | SHADOW8-B-27 | Ignition TTL cylinder 1 | ignition_out | corroborated | |
| OEM-1-V | Ignition leading | ignition_out | SHADOW8-B-28 | Ignition TTL cylinder 2 | ignition_out | corroborated | |
| OEM-1-X | Ignition trailing | ignition_out | SHADOW8-B-29 | Ignition TTL cylinder 3 | ignition_out | single_source | |
| OEM-2-A | 5V sensor supply | vref | SHADOW8-A-3 | 5.0V sensor supply | vref | single_source | |
| OEM-2-B | MAP (pressure) signal | analog_in | SHADOW8-A-11 | Analog voltage 2 | analog_in | single_source | |
| OEM-2-C | Sensor ground | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | single_source | |
| OEM-2-D | O2 sensor signal | lambda_nb_in | SHADOW8-A-13 | Analog voltage 4 | analog_in | single_source | |
| OEM-2-E | Airflow signal (AFM) | analog_in | SHADOW8-A-10 | Analog voltage 1 | analog_in | single_source | |
| OEM-2-F | Variable resistor (tuning) | analog_in | SHADOW8-A-20 | Analog voltage 8 (switchable 1k pull-up) | analog_in | single_source | |
| OEM-2-G | Throttle position (TPS) | analog_in | SHADOW8-A-12 | Analog voltage 3 | analog_in | single_source | |
| OEM-2-H | Atmospheric pressure (ATP) | analog_in | SHADOW8-A-21 | Analog voltage 9 (switchable 1k pull-up) | analog_in | single_source | |
| OEM-2-I | Coolant temperature (ECT) | temp_in | SHADOW8-A-14 | Analog voltage 5 | analog_in | single_source | |
| OEM-2-J | Inlet air temperature (IAT) | temp_in | SHADOW8-A-18 | Analog voltage 6 | analog_in | single_source | |
| OEM-2-K | Turbo control valve (boost) | low_side_out | SHADOW8-B-14 | Aux output 5 | switch_out | single_source | |
| OEM-2-L | Manifold air temperature (MAT) | temp_in | SHADOW8-A-19 | Analog voltage 7 (switchable 1k pull-up) | analog_in | single_source | |
| OEM-2-M | Pressure regulator control valve | low_side_out | SHADOW8-B-15 | Aux output 6 | switch_out | single_source | |
| OEM-2-N | EGR valve | low_side_out | SHADOW8-B-16 | Aux output 7 | switch_out | single_source | |
| OEM-2-O | Switching valve | low_side_out | SHADOW8-B-17 | Aux output 8 | switch_out | single_source | |
| OEM-2-P | Relief valve | low_side_out | SHADOW8-B-6 | Injector cylinder 5 | injector_out | single_source | |
| OEM-2-Q | Idle control (BAC) | low_side_out | SHADOW8-B-7 | Injector cylinder 6 | injector_out | single_source | |
| OEM-2-R | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | single_source | |
| OEM-3-A | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | single_source | |
| OEM-3-B | Starter input | digital_in | SHADOW8-A-31 | Digital input 6 | digital_in | single_source | |
| OEM-3-C | Primary injector 2 | injector_out | SHADOW8-B-4 | Injector cylinder 3 | injector_out | single_source | |
| OEM-3-D | Starter inhibit / fuel pump control | low_side_out | SHADOW8-B-11 | Aux output 2 | low_side_out | single_source | |
| OEM-3-E | Primary injector 1 | injector_out | SHADOW8-B-2 | Injector cylinder 1 | injector_out | single_source | |
| OEM-3-F | Secondary injector 2 | injector_out | SHADOW8-B-5 | Injector cylinder 4 | injector_out | single_source | |
| OEM-3-G | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | single_source | |
| OEM-3-H | Secondary injector 1 | injector_out | SHADOW8-B-3 | Injector cylinder 2 | injector_out | single_source | |
| OEM-3-I | Ignition power (+12V via main relay) | power_in | SHADOW8-A-1 + SHADOW8-B-26 | ECU supply + Aux 9–12 power supply | power_in | single_source | |
| OEM-3-J | Battery constant (+12V) | power_in | SHADOW8-B-1 | Battery constant (HOT) supply | power_in | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-3-I | SP-14V-1 | 0.85 | no route | Ignition power (+12V via 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-3-J | SHADOW8-B-1 | 0.85 | no route | Battery constant (+12V) | — | |
| W5 | OEM-2-R | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | OEM-3-G | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | SP-GND-1 | SHADOW8-A-34 | 0.85 | no route | Ground 2 | — | |
| W9 | SP-GND-1 | SHADOW8-A-9 | 0.85 | no route | Ground 1 | — | |
| W10 | OEM-1-P | SP-0V-1 | 0.5 | no route | CAS ground | — | |
| W11 | OEM-1-Q | SP-0V-1 | 0.5 | no route | CAS ground | — | |
| W12 | OEM-2-C | SP-0V-1 | 0.5 | no route | Sensor 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-2-A | SHADOW8-A-3 | 0.5 | no route | 5V sensor supply | — | |
| W16 | OEM-1-T | SHADOW8-A-5 | 0.5 | no route | CAS 24-tooth (NE, crank) | — | |
| W17 | OEM-1-N | SHADOW8-A-6 | 0.5 | no route | CAS 2-tooth (G, cam) | — | |
| W18 | OEM-1-R | SHADOW8-A-16 | 0.5 | no route | Knock input | — | |
| W19 | OEM-1-U | SHADOW8-B-27 | 0.5 | no route | Ignition select (trailing rotor) | — | |
| W20 | OEM-1-V | SHADOW8-B-28 | 0.5 | no route | Ignition leading | — | |
| W21 | OEM-1-X | SHADOW8-B-29 | 0.5 | no route | Ignition trailing | — | |
| W22 | OEM-3-E | SHADOW8-B-2 | 0.5 | no route | Primary injector 1 | — | |
| W23 | OEM-3-H | SHADOW8-B-3 | 0.5 | no route | Secondary injector 1 | — | |
| W24 | OEM-3-C | SHADOW8-B-4 | 0.5 | no route | Primary injector 2 | — | |
| W25 | OEM-3-F | SHADOW8-B-5 | 0.5 | no route | Secondary injector 2 | — | |
| W26 | OEM-1-F | SHADOW8-B-10 | 0.5 | no route | A/C clutch relay | — | |
| W27 | OEM-3-D | SHADOW8-B-11 | 0.5 | no route | Starter inhibit / fuel pump control | — | |
| W28 | OEM-1-C | SHADOW8-B-12 | 0.5 | no route | Air bypass solenoid | — | |
| W29 | OEM-1-S | SHADOW8-B-13 | 0.5 | no route | Port air valve | — | |
| W30 | OEM-2-K | SHADOW8-B-14 | 0.5 | no route | Turbo control valve (boost) | — | |
| W31 | OEM-2-M | SHADOW8-B-15 | 0.5 | no route | Pressure regulator control valve | — | |
| W32 | OEM-2-N | SHADOW8-B-16 | 0.5 | no route | EGR valve | — | |
| W33 | OEM-2-O | SHADOW8-B-17 | 0.5 | no route | Switching valve | — | |
| W34 | OEM-2-P | SHADOW8-B-6 | 0.5 | no route | Relief valve | — | |
| W35 | OEM-2-Q | SHADOW8-B-7 | 0.5 | no route | Idle control (BAC) | — | |
| W36 | OEM-2-E | SHADOW8-A-10 | 0.5 | no route | Airflow signal (AFM) | — | |
| W37 | OEM-2-B | SHADOW8-A-11 | 0.5 | no route | MAP (pressure) signal | — | |
| W38 | OEM-2-G | SHADOW8-A-12 | 0.5 | no route | Throttle position (TPS) | — | |
| W39 | OEM-2-D | SHADOW8-A-13 | 0.5 | no route | O2 sensor signal | — | |
| W40 | OEM-2-I | SHADOW8-A-14 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W41 | OEM-2-J | SHADOW8-A-18 | 0.5 | no route | Inlet air temperature (IAT) | — | |
| W42 | OEM-2-L | SHADOW8-A-19 | 0.5 | no route | Manifold air temperature (MAT) | — | |
| W43 | OEM-2-F | SHADOW8-A-20 | 0.5 | no route | Variable resistor (tuning) | — | |
| W44 | OEM-2-H | SHADOW8-A-21 | 0.5 | no route | Atmospheric pressure (ATP) | — | |
| W45 | OEM-1-O | SHADOW8-A-26 | 0.5 | no route | Vehicle speed (mileage sensor) | — | |
| W46 | OEM-1-E | SHADOW8-A-27 | 0.5 | no route | A/C request | — | |
| W47 | OEM-1-G | SHADOW8-A-28 | 0.5 | no route | Neutral switch | — | |
| W48 | OEM-1-H | SHADOW8-A-29 | 0.5 | no route | Water temperature switch | — | |
| W49 | OEM-1-L | SHADOW8-A-30 | 0.5 | no route | Clutch switch | — | |
| W50 | OEM-3-B | SHADOW8-A-31 | 0.5 | no route | Starter input | — |
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) | 43.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (11)
| 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-A-14 | OEM-2-I "Coolant temperature (ECT)" [temp_in] is wired to SHADOW8-A-14 "Analog voltage 5" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-2-J ↔ SHADOW8-A-18 | OEM-2-J "Inlet air temperature (IAT)" [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 | NET_FAMILY | OEM-2-K ↔ SHADOW8-B-14 | OEM-2-K "Turbo control valve (boost)" [low_side_out] is wired to SHADOW8-B-14 "Aux output 5" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-2-L ↔ SHADOW8-A-19 | OEM-2-L "Manifold air temperature (MAT)" [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-2-M ↔ SHADOW8-B-15 | OEM-2-M "Pressure regulator control valve" [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-N ↔ SHADOW8-B-16 | OEM-2-N "EGR valve" [low_side_out] is wired to SHADOW8-B-16 "Aux output 7" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-2-O ↔ SHADOW8-B-17 | OEM-2-O "Switching valve" [low_side_out] is wired to SHADOW8-B-17 "Aux output 8" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-2-P ↔ SHADOW8-B-6 | OEM-2-P "Relief valve" [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-2-Q ↔ SHADOW8-B-7 | OEM-2-Q "Idle control (BAC)" [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 | UNMAPPED | OEM | 1 optional OEM pins are not mapped: OEM-1-M Ignition feedback (tacho) |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Fit check: unconfirmed. Confirm these before building: - Trigger pattern for Mazda 13B-T not found in the ECU's docs (Ignition modes support Direct Trailing Spark; trigger decode is generic, no rotary-specific preset documented.) 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 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-1 M: Ignition feedback (tacho): no free tacho/frequency_out/low_side/ls_hs on Emtron Shadow 8
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Adaptronic: Select RX7 Series 4 FC Turbo plug-in pinout | https://www.rx7club.com/attachments/adaptronic-engine-mgmt-aus-311/543323d1411579751-need-pin-out-diagram-s5-pnp-rx7_s4_sel_pinout.pdf | — | — | — |
| 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 |
| 2 | forum | MSExtra: FC3S CAS wiring (NE/G) | https://www.msextra.com/forums/viewtopic.php?p=279694 | — | — | — |
| 2 | forum | NoPistons: S4 Turbo II main harness wiring (ECU plug, colours only) | https://www.nopistons.com/1st-generation-specific-16/thinking-putting-89-13bt-sa22-66354/page2/ | — | — | — |