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 |
|---|---|---|---|
| ME221-C1 | connector | ||
| NEW-KEYON | terminal | ||
| OEM-2 | connector | ||
| OEM-3 | connector | ||
| OEM-4 | connector | ||
| RLY1-R | connector | ||
| RLY2-R | connector | ||
| SP-0V | splice | ||
| SP-14V | splice | ||
| SP-GND | splice |
Create part
Cut list
Lengths need a layout (0 of 50 routed).
| Wire | From / To | Gauge | Signal |
|---|---|---|---|
| W1 | OEM-2-P / SP-14V-1 | 0.85 | ISC valve +14V feed |
| W2 | OEM-4-AF / SP-14V-1 | 0.85 | ECU power +14V (main relay) |
| W3 | OEM-3-A / SP-GND-1 | 0.85 | Power ground |
| W4 | OEM-3-B / SP-GND-1 | 0.85 | Power ground |
| W5 | OEM-4-A / SP-GND-1 | 0.85 | Power ground |
| W6 | SP-GND-1 / ME221-C1-10 | 0.85 | GROUND CHASSIS |
| W7 | SP-GND-1 / ME221-C1-61 | 0.85 | GROUND |
| W8 | SP-GND-1 / ME221-C1-89 | 0.85 | GROUND |
| W9 | SP-GND-1 / ME221-C1-90 | 0.85 | GROUND |
| W10 | OEM-4-O / SP-0V-1 | 0.5 | Signal ground |
| W11 | SP-0V-1 / ME221-C1-52 | 0.5 | SENSORS GROUND |
| W12 | SP-0V-1 / ME221-C1-84 | 0.5 | Sensor Ground |
| W13 | OEM-4-L / ME221-C1-45 | 0.5 | +5V sensor supply |
| W14 | OEM-3-Y / ME221-C1-80 | 0.5 | Crank position (CKP) |
| W15 | OEM-3-V / ME221-C1-22 | 0.5 | Cam position (CMP) |
| W16 | OEM-4-M / ME221-C1-53 | 0.5 | Knock sensor |
| W17 | OEM-3-F / ME221-C1-32 | 0.5 | Ignition 1 (coils 1+4, wasted spark) |
| W18 | OEM-3-I / ME221-C1-31 | 0.5 | Ignition 2 (coils 2+3, wasted spark) |
| W19 | OEM-2-A / ME221-C1-63 | 0.5 | Injector 1 |
| W20 | OEM-2-D / ME221-C1-4 | 0.5 | Injector 2 |
| W21 | OEM-2-G / ME221-C1-33 | 0.5 | Injector 3 |
| W22 | OEM-2-J / ME221-C1-3 | 0.5 | Injector 4 |
| W23 | OEM-4-S / ME221-C1-15 | 0.5 | Ignition switch (IG1) sense |
| W24 | OEM-4-X / ME221-C1-26 | 0.5 | Mass air flow (MAF) |
| W25 | OEM-4-V / ME221-C1-56 | 0.5 | Throttle position (TPS) |
| W26 | OEM-4-P / ME221-C1-86 | 0.5 | Coolant temperature (ECT) |
| W27 | OEM-2-B / ME221-C1-73 | 0.5 | Cooling fan relay |
| W28 | OEM-2-C / ME221-C1-12 | 0.5 | Condenser fan relay |
| W29 | OEM-2-K / ME221-C1-74 | 0.5 | A/C clutch relay |
| W30 | OEM-2-M / ME221-C1-44 | 0.5 | Fuel pump relay |
| W31 | OEM-3-H / ME221-C1-69 | 0.5 | Main relay |
| W32 | OEM-2-O / ME221-C1-37 | 0.5 | Fuel pump relay (non-immobiliser) |
| W33 | OEM-4-D / RLY1-R-OUT | 0.5 | Boost control solenoid (turbo) |
| W34 | SP-14V-1 / RLY1-R-IN | 0.5 | Relay contact input (switched +12 V) |
| W35 | SP-14V-1 / RLY1-R-COIL+ | 0.5 | Relay coil positive (switched +12 V) |
| W36 | RLY1-R-COIL- / ME221-C1-39 | 0.5 | Relay coil negative (ECU low-side driver) |
| W37 | OEM-4-E / RLY2-R-OUT | 0.5 | Boost control solenoid (turbo) |
| W38 | SP-14V-1 / RLY2-R-IN | 0.5 | Relay contact input (switched +12 V) |
| W39 | SP-14V-1 / RLY2-R-COIL+ | 0.5 | Relay coil positive (switched +12 V) |
| W40 | RLY2-R-COIL- / ME221-C1-16 | 0.5 | Relay coil negative (ECU low-side driver) |
| W41 | OEM-3-J / ME221-C1-42 | 0.5 | Front O2 heater |
| W42 | OEM-3-P / ME221-C1-72 | 0.5 | Rear O2 heater |
| W43 | OEM-2-E / ME221-C1-43 | 0.5 | EGR valve |
| W44 | OEM-3-O / ME221-C1-79 | 0.5 | Tachometer output |
| W45 | OEM-4-AE / ME221-C1-17 | 0.5 | BARO/MAP sensor (turbo boost pressure) |
| W46 | OEM-4-AA / ME221-C1-18 | 0.5 | Rear O2 signal |
| W47 | OEM-4-R / ME221-C1-57 | 0.5 | Intake air temperature 2 (IAT2, turbo) |
| W48 | OEM-3-T / ME221-C1-6 | 0.5 | Vehicle speed |
| W49 | OEM-3-S / ME221-C1-7 | 0.5 | Immobiliser |
| W50 | NEW-KEYON-1 / ME221-C1-64 | 0.85 | VBAT |
Bill of materials
No parts in this harness.