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
MS3PROMINI-A
face not drawn
| Point | Signal | Family | Evidence | Destination |
|---|---|---|---|---|
| Power in | single_source· Vendor | SP-14V-1 | ||
| 5V / 8V ref | single_source· Vendor | SP-5V1-1 | ||
| Low-side out | single_source· Vendor | OEM-T121-66Secondary-air pump relay (J299) | ||
| Low-side out | single_source· Vendor | OEM-T121-65Fuel pump relay control | ||
| Injector | single_source· Vendor | OEM-T121-88Injector 4 (N33) | ||
| Injector | single_source· Vendor | OEM-T121-5Wideband lambda heater (Z19) | ||
| Injector | single_source· Vendor | OEM-T121-63Post-cat lambda heater (Z29) | ||
| Injector | single_source· Vendor | OEM-T121-104Boost control solenoid (N75) | ||
| Injector | single_source· Vendor | OEM-T121-105Diverter valve (N249) | ||
| Injector | single_source· Vendor | OEM-T121-96Injector 1 (N30) | ||
| Injector | single_source· Vendor | OEM-T121-89Injector 2 (N31) | ||
| Injector | single_source· Vendor | OEM-T121-97Injector 3 (N32) | ||
| Analog in | single_source· Vendor | OEM-T121-53MAF sensor signal (G70) | ||
| Analog in | single_source· Vendor | OEM-T121-101Boost pressure sensor (G31) | ||
| Analog in | single_source· Vendor | OEM-T121-84Throttle position sensor 1 (G187) | ||
| Analog in | single_source· Vendor | OEM-T121-35Accelerator pedal position 2 (G185) | ||
| Ignition | single_source· Vendor | OEM-T121-102Ignition coil 1 (N127) | ||
| Ignition | single_source· Vendor | OEM-T121-95Ignition coil 2 (N128) | ||
| Ignition | single_source· Vendor | OEM-T121-103Ignition coil 3 (N158) | ||
| Ignition | single_source· Vendor | OEM-T121-94Ignition coil 4 (N163) | ||
| Sensor ground | single_source· Vendor | SP-0V-1 | ||
| Ground | single_source· Vendor | SP-GND-1 | ||
| Ground | single_source· Vendor | SP-GND-1 | ||
| CAN low | single_source· Vendor | OEM-T121-58CAN bus low | ||
| CAN high | single_source· Vendor | OEM-T121-60CAN bus high | ||
| Temp in | single_source· Vendor | OEM-T121-93Engine coolant temperature (G62) | ||
| Temp in | single_source· Vendor | OEM-T121-85Intake air temperature (G42) | ||
| Analog in | single_source· Vendor | OEM-T121-33Accelerator pedal position 1 (G79) | ||
| Digital in | single_source· Vendor | not connected | ||
| Crank / cam | single_source· Vendor | OEM-T121-82Crank position sensor (G28) | ||
| Crank / cam | single_source· Vendor | not connected | ||
| Crank / cam | single_source· Vendor | OEM-T121-86Camshaft position sensor (G40) | ||
| Crank / cam | single_source· Vendor | not connected | ||
| Digital in | single_source· Vendor | OEM-T121-54Road speed signal (VSS) | ||
| Digital in | single_source· Vendor | not connected |
Mates
No mated connectors (e.g. OEM plug ↔ adapter header).
mates with