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-T121
face not drawn
| Point | Signal | Family | Evidence | Destination |
|---|---|---|---|---|
| Ground | corroborated· Community | SP-GND-1 | ||
| Ground | corroborated· Community | SP-GND-1 | ||
| Digital in | corroborated· Community | not connected | ||
| Low-side out | corroborated· Community | T4-C3-9Lambda 1 Heater Negative | ||
| Low-side out | corroborated· Community | not connected | ||
| Power in | corroborated· Community | SP-14V-1 | ||
| Power in | corroborated· Community | not connected | ||
| Sensor ground | corroborated· Community | SP-0V-1 | ||
| Analog in | corroborated· Community | T4-C2-5Analogue 3 | ||
| Sensor ground | corroborated· Community | SP-0V-1 | ||
| Analog in | corroborated· Community | T4-C2-19Analogue 6 | ||
| Sensor ground | corroborated· Community | SP-0V-1 | ||
| Tacho out | corroborated· Community | not connected | ||
| Serial | corroborated· Community | not connected | ||
| Low-side out | corroborated· Community | T4-C3-25PWM 7 | ||
| Low-side out | corroborated· Community | T4-C3-10PWM 8 | ||
| Wideband Ip | corroborated· Community | T4-C3-7Lambda 1 Pump Current | ||
| Wideband Ip | corroborated· Community | not connected | ||
| Analog in | corroborated· Community | T4-C2-10Analogue 1 | ||
| Digital in | corroborated· Community | T4-C2-2Wheel 1 | ||
| CAN low | corroborated· Community | T4-C2-28CAN Low | ||
| CAN high | corroborated· Community | T4-C2-26CAN High | ||
| Power in | corroborated· Community | T4-C3-26Permanent 12v | ||
| Low-side out | corroborated· Community | T4-C1-3PWM 3 | ||
| Low-side out | corroborated· Community | not connected | ||
| Low-side out | corroborated· Community | T4-C1-5PWM 1 | ||
| Low-side out | corroborated· Community | T4-C1-4PWM 2 | ||
| O2 narrowband | corroborated· Community | T4-C3-18Analogue 8 | ||
| O2 narrowband | corroborated· Community | T4-C2-34Analogue 9 | ||
| Wideband Vs | corroborated· Community | T4-C3-12Lambda 1 Nernst Voltage | ||
| Wideband Vs | corroborated· Community | not connected | ||
| 5V / 8V ref | corroborated· Community | SP-5V1-1 | ||
| 5V / 8V ref | corroborated· Community | SP-5V2-1 | ||
| Crank / cam | corroborated· Community | T4-C2-12Crank | ||
| 5V / 8V ref | corroborated· Community | SP-5V2-1 | ||
| Analog in | corroborated· Community | T4-C2-6Analogue 4 | ||
| Temp in | corroborated· Community | T4-C2-25Thermistor 2 | ||
| Crank / cam | corroborated· Community | T4-C2-22Cam 1 | ||
| Injector | corroborated· Community | T4-C1-25Injector 4 | ||
| Injector | corroborated· Community | T4-C1-17Injector 2 | ||
| Sensor ground | corroborated· Community | SP-0V-1 | ||
| Sensor ground | corroborated· Community | SP-0V-1 | ||
| Analog in | corroborated· Community | T4-C3-17Analogue 7 | ||
| Temp in | corroborated· Community | T4-C2-7Thermistor 1 | ||
| Ignition | corroborated· Community | T4-C1-26Coil 4 | ||
| Ignition | corroborated· Community | T4-C1-18Coil 2 | ||
| Injector | corroborated· Community | T4-C1-9Injector 1 | ||
| Injector | corroborated· Community | T4-C1-34Injector 3 | ||
| 5V / 8V ref | corroborated· Community | SP-5V1-1 | ||
| 5V / 8V ref | corroborated· Community | SP-5V2-1 | ||
| Analog in | corroborated· Community | T4-C2-1Analogue 2 | ||
| Ignition | corroborated· Community | T4-C1-10Coil 1 | ||
| Ignition | corroborated· Community | T4-C1-1Coil 3 | ||
| Low-side out | corroborated· Community | T4-C3-22PWM 4 | ||
| Low-side out | corroborated· Community | T4-C3-23PWM 5 | ||
| Knock | corroborated· Community | not connected | ||
| Knock | corroborated· Community | not connected | ||
| Sensor ground | corroborated· Community | SP-0V-1 | ||
| Low-side out | corroborated· Community | T4-C3-24PWM 6 | ||
| H-bridge | corroborated· Community | not connected | ||
| H-bridge | corroborated· Community | not connected | ||
| Power in | corroborated· Community | SP-14V-1 |
Mates
No mated connectors (e.g. OEM plug ↔ adapter header).
mates with