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 | ||
| OEM-A33 | connector | ||
| OEM-A34 | connector | ||
| OEM-A35 | connector | ||
| OEM-A36 | connector | ||
| SP-0V | splice | ||
| SP-14V | splice | ||
| SP-5V1 | splice | ||
| SP-GND | splice | ||
| SPEEDUINO-A | connector | ||
| SPEEDUINO-PWR | connector |
Create part
Cut list
Lengths need a layout (0 of 51 routed).
| Wire | From / To | Gauge | Signal |
|---|---|---|---|
| W1 | OEM-A33-1 / SP-14V-1 | 0.85 | ECU power (+B2, main relay) |
| W2 | OEM-A34-6 / SP-14V-1 | 0.85 | ECU power (+B, main relay) |
| W3 | OEM-A33-27 / MAIN-R-COIL+ | 0.5 | Ignition switch sense (IGSW, IG2 relay) |
| W4 | NEW-BATT-1 / MAIN-R-IN | 0.85 | Relay contact input (battery + via main fuse) |
| W5 | MAIN-R-COIL- / SP-GND-1 | 0.5 | Relay coil negative (ECU low-side driver) |
| W6 | MAIN-R-OUT / SPEEDUINO-PWR-12V | 0.85 | Relay contact output (switched +12V bus) |
| W7 | OEM-A33-4 / SP-GND-1 | 0.85 | Power ground (EC) |
| W8 | OEM-A34-1 / SP-GND-1 | 0.85 | Power ground (E03) |
| W9 | OEM-A34-2 / SP-GND-1 | 0.85 | Power ground (E04) |
| W10 | OEM-A34-3 / SP-GND-1 | 0.85 | Power ground (E05) |
| W11 | OEM-A36-3 / SP-GND-1 | 0.85 | Power ground (E02) |
| W12 | OEM-A36-4 / SP-GND-1 | 0.85 | Power ground (E01) |
| W13 | SP-GND-1 / SPEEDUINO-A-10 | 0.85 | Ground |
| W14 | SP-GND-1 / SPEEDUINO-A-9 | 0.85 | Ground |
| W15 | OEM-A33-29 / SP-0V-1 | 0.5 | MAF sensor ground (E2G) |
| W16 | OEM-A34-27 / SP-0V-1 | 0.5 | Crank position return (NE-) |
| W17 | OEM-A35-29 / SP-0V-1 | 0.5 | Accelerator pedal ground (EPA) |
| W18 | OEM-A35-30 / SP-0V-1 | 0.5 | Accelerator pedal ground (EPA2) |
| W19 | OEM-A36-29 / SP-0V-1 | 0.5 | Sensor ground (E1) |
| W20 | SP-0V-1 / SPEEDUINO-A-12 | 0.5 | Ground |
| W21 | SP-0V-1 / SPEEDUINO-A-23 | 0.5 | Ground |
| W22 | OEM-A34-34 / SP-5V1-1 | 0.5 | OCV power source (VCV, 5V) |
| W23 | OEM-A35-21 / SP-5V1-1 | 0.5 | Accelerator pedal 5V supply (VCPA) |
| W24 | OEM-A35-22 / SP-5V1-1 | 0.5 | Accelerator pedal 5V supply (VCP2) |
| W25 | OEM-A36-19 / SP-5V1-1 | 0.5 | Sensor 5V supply (VC) |
| W26 | SP-5V1-1 / SPEEDUINO-A-13 | 0.5 | 5V |
| W27 | OEM-A34-16 / SPEEDUINO-A-25 | 0.5 | Crank position (NE+) |
| W28 | OEM-A34-14 / SPEEDUINO-A-24 | 0.5 | VVT cam sensor exhaust bank 1 (EV1+) |
| W29 | OEM-A34-26 / SPEEDUINO-A-26 | 0.5 | VVT cam sensor intake bank 1 (VV1+) |
| W30 | OEM-A34-25 / SPEEDUINO-A-14 | 0.5 | VVT cam sensor exhaust bank 2 (EV2+) |
| W31 | OEM-A36-21 / SPEEDUINO-A-7 | 0.5 | Ignition coil 1 (IGT1) |
| W32 | OEM-A36-10 / SPEEDUINO-A-34 | 0.5 | Ignition coil 2 (IGT2) |
| W33 | OEM-A36-31 / SPEEDUINO-A-33 | 0.5 | Ignition coil 3 (IGT3) |
| W34 | OEM-A36-8 / SPEEDUINO-A-8 | 0.5 | Ignition coil 4 (IGT4) |
| W35 | OEM-A36-12 / SPEEDUINO-A-1 | 0.5 | Injector 1 port (#10) |
| W36 | OEM-A36-22 / SPEEDUINO-A-2 | 0.5 | Injector 2 port (#20) |
| W37 | OEM-A36-32 / SPEEDUINO-A-3 | 0.5 | Injector 3 port (#30) |
| W38 | OEM-A36-13 / SPEEDUINO-A-5 | 0.5 | Injector 4 port (#40) |
| W39 | OEM-A35-31 / SPEEDUINO-A-22 | 0.5 | Accelerator pedal position 2 (VPA2) |
| W40 | OEM-A36-30 / SPEEDUINO-A-19 | 0.5 | Engine coolant temperature (THW) |
| W41 | OEM-A35-13 / SPEEDUINO-A-16 | 0.5 | EFI main relay 1 (SSHUT) |
| W42 | OEM-A35-12 / SPEEDUINO-A-15 | 0.5 | Cooling fan relay 2 (FAN2) |
| W43 | OEM-A35-11 / SPEEDUINO-A-36 | 0.5 | Cooling fan relay 3 (FAN1) |
| W44 | OEM-A33-20 / SPEEDUINO-A-35 | 0.5 | Blower relay (HB) |
| W45 | OEM-A35-17 / SPEEDUINO-A-37 | 0.5 | ETCS relay (MCR) |
| W46 | OEM-A35-35 / SPEEDUINO-A-38 | 0.5 | A/C clutch relay (AC) |
| W47 | OEM-A35-15 / SPEEDUINO-A-17 | 0.5 | Tachometer output (TACH) |
| W48 | OEM-A34-20 / SPEEDUINO-A-11 | 0.5 | Manifold absolute pressure (PIM) |
| W49 | OEM-A34-21 / SPEEDUINO-A-21 | 0.5 | Heated oxygen sensor (OX1B, rear) |
| W50 | OEM-A33-12 / SPEEDUINO-A-20 | 0.5 | Intake air temperature (THA, in MAF) |
| W51 | OEM-A33-14 / SPEEDUINO-A-18 | 0.5 | Starter signal (STSW2) |
Bill of materials
No parts in this harness.