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 |
|---|---|---|---|
| MAXXECUMINI-C1 | connector | ||
| OEM-T121 | connector | ||
| SP-0V | splice | ||
| SP-14V | splice | ||
| SP-5V1 | splice | ||
| SP-GND | splice |
Create part
Cut list
Lengths need a layout (0 of 43 routed).
| Wire | From / To | Gauge | Signal |
|---|---|---|---|
| W1 | OEM-T121-121 / SP-14V-1 | 0.85 | ECM + coil power (J271 relay feed) |
| W2 | OEM-T121-21 / SP-14V-1 | 0.85 | ECM power (J271 relay feed) |
| W3 | SP-14V-1 / MAXXECUMINI-C1-H4 | 0.85 | +12V (ECU power supply) |
| W4 | OEM-T121-1 / SP-GND-1 | 0.85 | ECU ground |
| W5 | OEM-T121-2 / SP-GND-1 | 0.85 | ECU ground |
| W6 | SP-GND-1 / MAXXECUMINI-C1-G4 | 0.85 | ENGINE GND |
| W7 | OEM-T121-108 / SP-0V-1 | 0.5 | Sensor ground |
| W8 | OEM-T121-29 / SP-0V-1 | 0.5 | MAF sensor ground (G70) |
| W9 | OEM-T121-34 / SP-0V-1 | 0.5 | Accelerator pedal position 1 ground (G79) |
| W10 | OEM-T121-36 / SP-0V-1 | 0.5 | Accelerator pedal position 2 ground (G185) |
| W11 | OEM-T121-90 / SP-0V-1 | 0.5 | Crank position sensor ground (G28) |
| W12 | OEM-T121-91 / SP-0V-1 | 0.5 | Throttle position sensor ground (G187/G188) |
| W13 | SP-0V-1 / MAXXECUMINI-C1-A2 | 0.5 | TRIGGER GND |
| W14 | SP-0V-1 / MAXXECUMINI-C1-B3 | 0.5 | SENSOR GND |
| W15 | SP-0V-1 / MAXXECUMINI-C1-B4 | 0.5 | SENSOR GND |
| W16 | SP-0V-1 / MAXXECUMINI-C1-D4 | 0.5 | SENSOR GND |
| W17 | OEM-T121-72 / SP-5V1-1 | 0.5 | Accelerator pedal position 1 5V supply (G79) |
| W18 | OEM-T121-73 / SP-5V1-1 | 0.5 | Accelerator pedal position 2 5V supply (G185) |
| W19 | OEM-T121-83 / SP-5V1-1 | 0.5 | Throttle position sensor 5V supply (G187/G188) |
| W20 | OEM-T121-98 / SP-5V1-1 | 0.5 | Cam + boost sensor 5V supply (G40/G31) |
| W21 | OEM-T121-99 / SP-5V1-1 | 0.5 | Knock sensor 5V supply (G61/G66) |
| W22 | SP-5V1-1 / MAXXECUMINI-C1-E2 | 0.5 | +5V sensor supply |
| W23 | OEM-T121-82 / MAXXECUMINI-C1-A1 | 0.5 | Crank position sensor (G28) |
| W24 | OEM-T121-102 / MAXXECUMINI-C1-F1 | 0.5 | Ignition coil 1 (N127) |
| W25 | OEM-T121-95 / MAXXECUMINI-C1-F2 | 0.5 | Ignition coil 2 (N128) |
| W26 | OEM-T121-103 / MAXXECUMINI-C1-F3 | 0.5 | Ignition coil 3 (N158) |
| W27 | OEM-T121-94 / MAXXECUMINI-C1-F4 | 0.5 | Ignition coil 4 (N163) |
| W28 | OEM-T121-96 / MAXXECUMINI-C1-G3 | 0.5 | Injector 1 (N30) |
| W29 | OEM-T121-89 / MAXXECUMINI-C1-H1 | 0.5 | Injector 2 (N31) |
| W30 | OEM-T121-97 / MAXXECUMINI-C1-H2 | 0.5 | Injector 3 (N32) |
| W31 | OEM-T121-88 / MAXXECUMINI-C1-H3 | 0.5 | Injector 4 (N33) |
| W32 | OEM-T121-53 / MAXXECUMINI-C1-C3 | 0.5 | MAF sensor signal (G70) |
| W33 | OEM-T121-101 / MAXXECUMINI-C1-C4 | 0.5 | Boost pressure sensor (G31) |
| W34 | OEM-T121-33 / MAXXECUMINI-C1-D2 | 0.5 | Accelerator pedal position 1 (G79) |
| W35 | OEM-T121-93 / MAXXECUMINI-C1-C1 | 0.5 | Engine coolant temperature (G62) |
| W36 | OEM-T121-65 / MAXXECUMINI-C1-G2 | 0.5 | Fuel pump relay control |
| W37 | OEM-T121-66 / MAXXECUMINI-C1-G1 | 0.5 | Secondary-air pump relay (J299) |
| W38 | OEM-T121-5 / MAXXECUMINI-C1-E1 | 0.5 | Wideband lambda heater (Z19) |
| W39 | OEM-T121-63 / MAXXECUMINI-C1-D1 | 0.5 | Post-cat lambda heater (Z29) |
| W40 | OEM-T121-85 / MAXXECUMINI-C1-C2 | 0.5 | Intake air temperature (G42) |
| W41 | OEM-T121-54 / MAXXECUMINI-C1-B1 | 0.5 | Road speed signal (VSS) |
| W42 | OEM-T121-60 / MAXXECUMINI-C1-E4 | 0.5 | CAN bus high |
| W43 | OEM-T121-58 / MAXXECUMINI-C1-E3 | 0.5 | CAN bus low |
Bill of materials
No parts in this harness.