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-5 | connector | ||
| OEM-A | connector | ||
| OEM-B | connector | ||
| OEM-C | connector | ||
| OEM-D | connector | ||
| RLY1-R | connector | ||
| RLY2-R | 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 58 routed).
| Wire | From / To | Gauge | Signal |
|---|---|---|---|
| W1 | OEM-A-25 / SP-14V-1 | 0.85 | ECU power (IGP1) |
| W2 | OEM-C-1 / SP-14V-1 | 0.85 | ECU power (IGP2) |
| W3 | NEW-KEYON-1 / MAIN-R-COIL+ | 0.5 | Relay coil positive (ignition-switched +12V) |
| 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-A-23 / SP-GND-1 | 0.85 | Power ground (PG1) |
| W8 | OEM-A-24 / SP-GND-1 | 0.85 | Power ground (PG2) |
| W9 | OEM-B-2 / SP-GND-1 | 0.85 | Chassis ground (LG2) |
| W10 | SP-GND-1 / SPEEDUINO-A-10 | 0.85 | Ground |
| W11 | SP-GND-1 / SPEEDUINO-A-9 | 0.85 | Ground |
| W12 | OEM-A-26 / SP-0V-1 | 0.5 | Sensor ground (LG1) |
| W13 | OEM-B-10 / SP-0V-1 | 0.5 | CYL 2M — CYP sensor 2 return |
| W14 | OEM-B-12 / SP-0V-1 | 0.5 | CYL 1M — CYP sensor 1 return |
| W15 | OEM-B-14 / SP-0V-1 | 0.5 | CRNK 2M — TDC sensor return |
| W16 | OEM-B-16 / SP-0V-1 | 0.5 | CRNK 1M — crank sensor return |
| W17 | OEM-D-21 / SP-0V-1 | 0.5 | Sensor ground (SG) |
| W18 | OEM-D-22 / SP-0V-1 | 0.5 | Sensor ground (SG) |
| W19 | SP-0V-1 / SPEEDUINO-A-12 | 0.5 | Ground |
| W20 | SP-0V-1 / SPEEDUINO-A-23 | 0.5 | Ground |
| W21 | OEM-D-18 / SP-5V1-1 | 0.5 | +5V sensor supply (VCC) |
| W22 | OEM-D-19 / SP-5V1-1 | 0.5 | +5V sensor supply (VCC) |
| W23 | OEM-D-20 / SP-5V1-1 | 0.5 | +5V sensor supply (VCC) |
| W24 | SP-5V1-1 / SPEEDUINO-A-13 | 0.5 | 5V |
| W25 | OEM-B-15 / SPEEDUINO-A-25 | 0.5 | CRNK 1P — crank sensor signal |
| W26 | OEM-B-13 / SPEEDUINO-A-27 | 0.5 | CRNK 2P — TDC sensor signal |
| W27 | OEM-B-11 / SPEEDUINO-A-24 | 0.5 | CYL 1P — CYP sensor 1 signal |
| W28 | OEM-B-9 / SPEEDUINO-A-26 | 0.5 | CYL 2P — CYP sensor 2 signal |
| W29 | OEM-A-21 / SPEEDUINO-A-7 | 0.5 | Ignition coil 1 |
| W30 | OEM-A-22 / SPEEDUINO-A-34 | 0.5 | Ignition coil 2 |
| W31 | OEM-B-8 / SPEEDUINO-A-33 | 0.5 | Ignition coil 3 |
| W32 | OEM-B-6 / SPEEDUINO-A-8 | 0.5 | Ignition coil 4 |
| W33 | OEM-A-1 / SPEEDUINO-A-1 | 0.5 | Injector 1 |
| W34 | OEM-A-3 / SPEEDUINO-A-2 | 0.5 | Injector 2 |
| W35 | OEM-A-5 / SPEEDUINO-A-3 | 0.5 | Injector 3 |
| W36 | OEM-A-2 / SPEEDUINO-A-5 | 0.5 | Injector 4 |
| W37 | OEM-A-4 / SPEEDUINO-A-1 | 0.5 | Injector 5 |
| W38 | OEM-A-6 / SPEEDUINO-A-2 | 0.5 | Injector 6 |
| W39 | OEM-D-17 / SPEEDUINO-A-11 | 0.5 | MAP sensor |
| W40 | OEM-D-11 / SPEEDUINO-A-22 | 0.5 | Throttle position sensor (TPS) |
| W41 | OEM-D-13 / SPEEDUINO-A-19 | 0.5 | Engine coolant temperature (ECT) |
| W42 | OEM-A-8 / SPEEDUINO-A-16 | 0.5 | Fuel pump relay 2 (FLR2) |
| W43 | OEM-A-15 / SPEEDUINO-A-15 | 0.5 | A/C clutch relay (ACC) |
| W44 | OEM-A-18 / SPEEDUINO-A-36 | 0.5 | Radiator fan control (FANCNTR) |
| W45 | OEM-A-7 / SPEEDUINO-A-35 | 0.5 | Main relay |
| W46 | OEM-5-F5 / RLY1-R-OUT | 0.5 | Front VTEC solenoid valve |
| W47 | SP-14V-1 / RLY1-R-IN | 0.5 | Relay contact input (switched +12 V) |
| W48 | SP-14V-1 / RLY1-R-COIL+ | 0.5 | Relay coil positive (switched +12 V) |
| W49 | RLY1-R-COIL- / SPEEDUINO-A-37 | 0.5 | Relay coil negative (ECU low-side driver) |
| W50 | OEM-5-F7 / RLY2-R-OUT | 0.5 | Rear VTEC solenoid valve |
| W51 | SP-14V-1 / RLY2-R-IN | 0.5 | Relay contact input (switched +12 V) |
| W52 | SP-14V-1 / RLY2-R-COIL+ | 0.5 | Relay coil positive (switched +12 V) |
| W53 | RLY2-R-COIL- / SPEEDUINO-A-38 | 0.5 | Relay coil negative (ECU low-side driver) |
| W54 | OEM-C-4 / SPEEDUINO-A-17 | 0.5 | Tachometer output (NEP) |
| W55 | OEM-D-14 / SPEEDUINO-A-21 | 0.5 | Primary O2 sensor |
| W56 | OEM-D-15 / SPEEDUINO-A-20 | 0.5 | Intake air temperature (IAT) |
| W57 | OEM-C-2 / SPEEDUINO-A-14 | 0.5 | Vehicle speed sensor (VSS) |
| W58 | OEM-D-9 / SPEEDUINO-A-18 | 0.5 | Alternator FR signal |
Bill of materials
No parts in this harness.