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.
Connectors
OEM-B74
face not drawn
| Point | Signal | Family | Evidence | Destination |
|---|---|---|---|---|
| Injector | single_source· Community | SPEEDUINO-A-3Injector 3 | ||
| Injector | single_source· Community | SPEEDUINO-A-5Injector 4 | ||
| Injector | single_source· Community | SPEEDUINO-A-1Injector 1 | ||
| Injector | single_source· Community | SPEEDUINO-A-2Injector 2 | ||
| Low-side out | single_source· Community | not connected | ||
| H-bridge | single_source· Community | not connected | ||
| H-bridge | single_source· Community | not connected | ||
| Ground | single_source· Community | SP-GND-1 | ||
| Crank / cam | single_source· Community | SPEEDUINO-A-24Cam input / VR2+ | ||
| Ignition | single_source· Community | SPEEDUINO-A-7Ignition 1 | ||
| Ignition | single_source· Community | SPEEDUINO-A-34Ignition 2 | ||
| Ignition | single_source· Community | SPEEDUINO-A-33Ignition 3 | ||
| Low-side out | single_source· Community | not connected | ||
| Low-side out | single_source· Community | SPEEDUINO-A-15Proto area 2 (fan) | ||
| Low-side out | single_source· Community | SPEEDUINO-A-36Idle 2 (3-wire idle) | ||
| Low-side out | single_source· Community | SPEEDUINO-A-35Boost | ||
| Low-side out | single_source· Community | SPEEDUINO-A-37PWM idle | ||
| Ground | single_source· Community | SP-GND-1 | ||
| Sensor ground | single_source· Community | SP-0V-1 | ||
| Crank / cam | single_source· Community | SPEEDUINO-A-25Crank input / VR1+ | ||
| Digital in | single_source· Community | not connected | ||
| Digital in | single_source· Community | not connected | ||
| Knock | single_source· Community | not connected | ||
| Knock | single_source· Community | not connected | ||
| Shield | single_source· Community | not connected | ||
| Ground | single_source· Community | SP-GND-1 |
Mates
No mated connectors (e.g. OEM plug ↔ adapter header).
mates with