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-A | connector | ||
| OEM-B | connector | ||
| OEM-D | connector | ||
| OEM-E | connector | ||
| RLY1-R | connector | ||
| SP-0V | splice | ||
| SP-14V | splice | ||
| SP-5V1 | splice | ||
| SP-GND | splice | ||
| SPEEDUINO-A | connector | ||
| SPEEDUINO-PWR | connector | ||
| TB-J | connector |
Create part
Cut list
Lengths need a layout (0 of 53 routed).
| Wire | From / To | Gauge | Signal |
|---|---|---|---|
| W1 | OEM-A-2 / SP-14V-1 | 0.85 | Ignition power 2 |
| W2 | OEM-A-3 / SP-14V-1 | 0.85 | Ignition power 1 |
| W3 | OEM-E-9 / MAIN-R-COIL+ | 0.5 | Ignition signal |
| 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-4 / SP-GND-1 | 0.85 | Power ground 2 |
| W8 | OEM-A-5 / SP-GND-1 | 0.85 | Power ground 1 |
| W9 | OEM-A-8 / SP-GND-1 | 0.85 | Logic ground 2 |
| W10 | OEM-A-9 / SP-GND-1 | 0.85 | Logic ground 1 |
| W11 | OEM-E-3 / SP-GND-1 | 0.85 | Logic ground 3 |
| W12 | SP-GND-1 / SPEEDUINO-A-10 | 0.85 | Ground |
| W13 | SP-GND-1 / SPEEDUINO-A-9 | 0.85 | Ground |
| W14 | OEM-A-23 / SP-0V-1 | 0.5 | Sensor ground 2 |
| W15 | OEM-A-24 / SP-0V-1 | 0.5 | Sensor ground 1 |
| W16 | OEM-E-4 / SP-0V-1 | 0.5 | Sensor ground 3 |
| W17 | TB-J-GND / SP-0V-1 | 0.5 | Throttle sensor ground |
| W18 | SP-0V-1 / SPEEDUINO-A-12 | 0.5 | Ground |
| W19 | SP-0V-1 / SPEEDUINO-A-23 | 0.5 | Ground |
| W20 | OEM-A-20 / SP-5V1-1 | 0.5 | Sensor voltage 2 |
| W21 | OEM-A-21 / SP-5V1-1 | 0.5 | Sensor voltage 1 |
| W22 | OEM-E-5 / SP-5V1-1 | 0.5 | Sensor voltage 3 |
| W23 | SP-5V1-1 / SPEEDUINO-A-28 | 0.5 | 5V |
| W24 | TB-J-VCC / SPEEDUINO-A-13 | 0.5 | Throttle sensor 5V supply |
| W25 | OEM-A-7 / SPEEDUINO-A-25 | 0.5 | Crank position sensor (T1) |
| W26 | OEM-A-6 / SPEEDUINO-A-24 | 0.5 | Cam position sensor (T2) |
| W27 | OEM-A-16 / SPEEDUINO-A-7 | 0.5 | Ignition coil 1 |
| W28 | OEM-A-15 / SPEEDUINO-A-34 | 0.5 | Ignition coil 2 |
| W29 | OEM-A-14 / SPEEDUINO-A-33 | 0.5 | Ignition coil 3 |
| W30 | OEM-A-13 / SPEEDUINO-A-8 | 0.5 | Ignition coil 4 |
| W31 | OEM-B-5 / SPEEDUINO-A-1 | 0.5 | Injector 1 |
| W32 | OEM-B-4 / SPEEDUINO-A-2 | 0.5 | Injector 2 |
| W33 | OEM-B-3 / SPEEDUINO-A-3 | 0.5 | Injector 3 |
| W34 | OEM-B-2 / SPEEDUINO-A-5 | 0.5 | Injector 4 |
| W35 | TB-J-M- / SPEEDUINO-A-32 | 0.5 | Throttle motor − |
| W36 | TB-J-M+ / SPEEDUINO-A-31 | 0.5 | Throttle motor + |
| W37 | OEM-E-17 / SPEEDUINO-A-16 | 0.5 | Fuel pump relay |
| W38 | OEM-E-7 / SPEEDUINO-A-15 | 0.5 | Main relay control |
| W39 | OEM-B-6 / RLY1-R-OUT | 0.5 | VTEC solenoid |
| W40 | SP-14V-1 / RLY1-R-IN | 0.5 | Relay contact input (switched +12 V) |
| W41 | SP-14V-1 / RLY1-R-COIL+ | 0.5 | Relay coil positive (switched +12 V) |
| W42 | RLY1-R-COIL- / SPEEDUINO-A-36 | 0.5 | Relay coil negative (ECU low-side driver) |
| W43 | OEM-A-30 / SPEEDUINO-A-11 | 0.5 | MAP sensor |
| W44 | OEM-A-25 / SPEEDUINO-A-22 | 0.5 | Accelerator pedal position B |
| W45 | OEM-B-8 / SPEEDUINO-A-19 | 0.5 | Coolant temp sensor |
| W46 | OEM-D-15 / SPEEDUINO-A-35 | 0.5 | Throttle actuator relay |
| W47 | OEM-E-12 / SPEEDUINO-A-37 | 0.5 | Radiator fan control |
| W48 | OEM-E-18 / SPEEDUINO-A-38 | 0.5 | A/C clutch relay |
| W49 | OEM-E-25 / SPEEDUINO-A-17 | 0.5 | Engine speed pulse (tacho) |
| W50 | OEM-E-20 / SPEEDUINO-A-21 | 0.5 | Secondary O2 sensor |
| W51 | OEM-E-1 / SPEEDUINO-A-20 | 0.5 | Coolant temp sensor 2 |
| W52 | OEM-A-18 / SPEEDUINO-A-14 | 0.5 | Vehicle speed sensor |
| W53 | OEM-B-11 / SPEEDUINO-A-18 | 0.5 | VTEC oil pressure switch |
Bill of materials
No wire parts assigned: 53 wires need a wire part.
| Part number | Manufacturer | Description | Qty | Unit | Unit price | Buy |
|---|---|---|---|---|---|---|
| connector5 lines | ||||||
| S2K-0609-ECU-A | Honda | S2000 2006–09 ECU plug A (P/N unknown) | 1 | ea | Mouser ↗Digi-Key ↗Amazon ↗ | |
| S2K-0609-ECU-B | Honda | S2000 2006–09 ECU plug B (P/N unknown) | 1 | ea | Mouser ↗Digi-Key ↗Amazon ↗ | |
| S2K-0609-ECU-D | Honda | S2000 2006–09 ECU plug D (P/N unknown) | 1 | ea | Mouser ↗Digi-Key ↗Amazon ↗ | |
| S2K-0609-ECU-E | Honda | S2000 2006–09 ECU plug E (P/N unknown) | 1 | ea | Mouser ↗Digi-Key ↗Amazon ↗ | |
| S2K-0609-TB | Honda | 2006–09 S2000 throttle body plug, 6-way (pin numbers from Link forum dealer post; housing P/N unknown) | 1 | ea | Mouser ↗Digi-Key ↗Amazon ↗ | |