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 |
|---|---|---|---|
| OEM-1 | connector | ||
| OEM-3 | connector | ||
| OEM-4 | connector | ||
| SP-0V | splice | ||
| SP-14V | splice | ||
| SP-GND | splice | ||
| T2I-C1 | connector |
Create part
Cut list
Lengths need a layout (0 of 33 routed).
| Wire | From / To | Gauge | Signal |
|---|---|---|---|
| W1 | OEM-4-B / SP-14V-1 | 0.85 | ECU power +12V (main relay) |
| W2 | SP-14V-1 / T2I-C1-31 | 0.85 | Ignition 12v In |
| W3 | OEM-4-I / T2I-C1-21 | 0.85 | Permanent +12V (battery) |
| W4 | OEM-4-A / SP-GND-1 | 0.85 | Chassis ground |
| W5 | OEM-4-C / SP-GND-1 | 0.85 | Chassis ground |
| W6 | OEM-4-D / SP-GND-1 | 0.85 | Chassis ground |
| W7 | OEM-4-K / SP-GND-1 | 0.85 | Chassis ground |
| W8 | SP-GND-1 / T2I-C1-13 | 0.85 | Power Ground 1 |
| W9 | SP-GND-1 / T2I-C1-14 | 0.85 | Power Ground 2 |
| W10 | OEM-3-O / SP-0V-1 | 0.5 | Sensor ground |
| W11 | OEM-4-H / SP-0V-1 | 0.5 | Crank pickup timing ground (CKP gnd) |
| W12 | SP-0V-1 / T2I-C1-28 | 0.5 | Sensor Ground |
| W13 | SP-0V-1 / T2I-C1-29 | 0.5 | Sensor Ground |
| W14 | OEM-3-I / T2I-C1-27 | 0.5 | +5V sensor reference |
| W15 | OEM-4-E / T2I-C1-19 | 0.5 | Crank position (CKP) sensor |
| W16 | OEM-4-G / T2I-C1-12 | 0.5 | CAS SGC (cam sync) |
| W17 | OEM-4-N / T2I-C1-3 | 0.5 | Ignition coil trigger (cyl 1&4) |
| W18 | OEM-4-R / T2I-C1-6 | 0.5 | Ignition coil trigger (cyl 2&3) |
| W19 | OEM-3-B / T2I-C1-20 | 0.5 | MAF sensor input |
| W20 | OEM-3-F / T2I-C1-22 | 0.5 | Throttle position (TPS) |
| W21 | OEM-3-G / T2I-C1-24 | 0.5 | Engine coolant temp (CLT) |
| W22 | OEM-1-A / T2I-C1-1 | 0.5 | Cooling fan relay (low-side) |
| W23 | OEM-1-B / T2I-C1-10 | 0.5 | A/C condenser fan relay |
| W24 | OEM-1-G / T2I-C1-18 | 0.5 | A/C clutch relay |
| W25 | OEM-1-U / T2I-C1-26 | 0.5 | Fuel pump relay (low-side) |
| W26 | OEM-3-M / T2I-C1-15 | 0.5 | Front O2 heater control |
| W27 | OEM-3-H / T2I-C1-23 | 0.5 | EGR boost sensor |
| W28 | OEM-3-N / T2I-C1-25 | 0.5 | EGR boost sensor (2nd channel) |
| W29 | OEM-3-C / T2I-C1-33 | 0.5 | Front O2 sensor input |
| W30 | OEM-3-D / T2I-C1-34 | 0.5 | Rear O2 sensor input |
| W31 | OEM-3-K / T2I-C1-32 | 0.5 | Intake air temp (IAT) |
| W32 | OEM-1-M / T2I-C1-11 | 0.5 | Vehicle speed sensor (VSS) |
| W33 | OEM-1-C / T2I-C1-30 | 0.5 | Starter input (12V while cranking) |
Bill of materials
No wire parts assigned: 33 wires need a wire part.
| Part number | Manufacturer | Description | Qty | Unit | Unit price | Buy |
|---|---|---|---|---|---|---|
| connector1 line | ||||||
| 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 1 | ea | 3 Way ComponentsKSV Looms (kit)TE Connectivity | |
| terminal1 line | ||||||
| 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 26 | ea | TE Connectivity | |