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.
Components
| Ref | Kind | Part | Exclude from BOM |
|---|---|---|---|
| MAIN-R | connector | ||
| NEW-BATT | terminal | ||
| NEW-KEYON | terminal | ||
| OEM-1 | connector | ||
| OEM-2 | connector | ||
| OEM-3 | connector | ||
| SP-0V | splice | ||
| SP-14V | splice | ||
| SP-GND | splice | ||
| SPEEDUINO-A | connector | ||
| SPEEDUINO-PWR | connector |
Create part
Cut list
Lengths need a layout (0 of 39 routed).
| Wire | From / To | Gauge | Signal |
|---|---|---|---|
| W1 | OEM-3-I / SP-14V-1 | 0.85 | Ignition power (+12V via main relay) |
| W2 | NEW-KEYON-1 / MAIN-R-COIL+ | 0.5 | Relay coil positive (ignition-switched +12V) |
| W3 | NEW-BATT-1 / MAIN-R-IN | 0.85 | Relay contact input (battery + via main fuse) |
| W4 | MAIN-R-COIL- / SP-GND-1 | 0.5 | Relay coil negative (ECU low-side driver) |
| W5 | MAIN-R-OUT / SPEEDUINO-PWR-12V | 0.85 | Relay contact output (switched +12V bus) |
| W6 | OEM-2-R / SP-GND-1 | 0.85 | Power ground |
| W7 | OEM-3-A / SP-GND-1 | 0.85 | Power ground |
| W8 | OEM-3-G / SP-GND-1 | 0.85 | Power ground |
| W9 | SP-GND-1 / SPEEDUINO-A-10 | 0.85 | Ground |
| W10 | SP-GND-1 / SPEEDUINO-A-9 | 0.85 | Ground |
| W11 | OEM-1-P / SP-0V-1 | 0.5 | CAS ground |
| W12 | OEM-1-Q / SP-0V-1 | 0.5 | CAS ground |
| W13 | OEM-2-C / SP-0V-1 | 0.5 | Sensor ground |
| W14 | SP-0V-1 / SPEEDUINO-A-12 | 0.5 | Ground |
| W15 | SP-0V-1 / SPEEDUINO-A-23 | 0.5 | Ground |
| W16 | OEM-2-A / SPEEDUINO-A-13 | 0.5 | 5V sensor supply |
| W17 | OEM-1-T / SPEEDUINO-A-25 | 0.5 | CAS 24-tooth (NE, crank) |
| W18 | OEM-1-N / SPEEDUINO-A-24 | 0.5 | CAS 2-tooth (G, cam) |
| W19 | OEM-1-U / SPEEDUINO-A-7 | 0.5 | Ignition select (trailing rotor) |
| W20 | OEM-1-V / SPEEDUINO-A-34 | 0.5 | Ignition leading |
| W21 | OEM-1-X / SPEEDUINO-A-33 | 0.5 | Ignition trailing |
| W22 | OEM-3-E / SPEEDUINO-A-1 | 0.5 | Primary injector 1 |
| W23 | OEM-3-H / SPEEDUINO-A-2 | 0.5 | Secondary injector 1 |
| W24 | OEM-3-C / SPEEDUINO-A-3 | 0.5 | Primary injector 2 |
| W25 | OEM-3-F / SPEEDUINO-A-5 | 0.5 | Secondary injector 2 |
| W26 | OEM-2-G / SPEEDUINO-A-22 | 0.5 | Throttle position (TPS) |
| W27 | OEM-2-I / SPEEDUINO-A-19 | 0.5 | Coolant temperature (ECT) |
| W28 | OEM-1-F / SPEEDUINO-A-16 | 0.5 | A/C clutch relay |
| W29 | OEM-3-D / SPEEDUINO-A-15 | 0.5 | Starter inhibit / fuel pump control |
| W30 | OEM-1-C / SPEEDUINO-A-36 | 0.5 | Air bypass solenoid |
| W31 | OEM-1-S / SPEEDUINO-A-35 | 0.5 | Port air valve |
| W32 | OEM-2-K / SPEEDUINO-A-37 | 0.5 | Turbo control valve (boost) |
| W33 | OEM-2-M / SPEEDUINO-A-38 | 0.5 | Pressure regulator control valve |
| W34 | OEM-1-M / SPEEDUINO-A-17 | 0.5 | Ignition feedback (tacho) |
| W35 | OEM-2-B / SPEEDUINO-A-11 | 0.5 | MAP (pressure) signal |
| W36 | OEM-2-D / SPEEDUINO-A-21 | 0.5 | O2 sensor signal |
| W37 | OEM-2-J / SPEEDUINO-A-20 | 0.5 | Inlet air temperature (IAT) |
| W38 | OEM-1-O / SPEEDUINO-A-14 | 0.5 | Vehicle speed (mileage sensor) |
| W39 | OEM-1-E / SPEEDUINO-A-18 | 0.5 | A/C request |
Bill of materials
No parts in this harness.