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 |
|---|---|---|---|
| FT450-A | connector | ||
| MAIN-R | connector | ||
| NEW-BATT | terminal | ||
| OEM-A | connector | ||
| OEM-B | connector | ||
| OEM-C | connector | ||
| OEM-D | connector | ||
| SP-0V | splice | ||
| SP-14V | splice | ||
| SP-GND | splice |
Create part
Cut list
Lengths need a layout (0 of 35 routed).
| Wire | From / To | Gauge | Signal |
|---|---|---|---|
| W1 | OEM-A-12 / SP-14V-1 | 0.85 | EFI main relay (B+) |
| W2 | OEM-A-13 / SP-14V-1 | 0.85 | EFI main relay (B1+) |
| W3 | OEM-A-1 / MAIN-R-COIL+ | 0.5 | Ignition switch (IGSW) |
| W4 | NEW-BATT-1 / MAIN-R-IN | 0.85 | Relay contact input (battery + via main fuse) |
| W5 | MAIN-R-COIL- / SP-GND-1 | 0.5 | Relay coil negative (ECU low-side driver) |
| W6 | MAIN-R-OUT / FT450-A-A13 | 0.85 | Relay contact output (switched +12V bus) |
| W7 | OEM-A-22 / SP-GND-1 | 0.85 | Power ground (E1) |
| W8 | OEM-D-13 / SP-GND-1 | 0.85 | Power ground (E01) |
| W9 | OEM-D-26 / SP-GND-1 | 0.85 | Power ground (E02) |
| W10 | SP-GND-1 / FT450-A-A7 | 0.85 | Power ground |
| W11 | OEM-A-18 / SP-0V-1 | 0.5 | Sensor ground (E2) |
| W12 | OEM-C-15 / SP-0V-1 | 0.5 | Cam sensor ground (G-) |
| W13 | OEM-C-16 / SP-0V-1 | 0.5 | Crank sensor - (NE-) |
| W14 | SP-0V-1 / FT450-A-A12 | 0.5 | Signal ground |
| W15 | OEM-A-11 / FT450-A-A14 | 0.5 | Sensor supply +5V (VC) |
| W16 | OEM-C-8 / FT450-A-A18 | 0.5 | Crank sensor + (NE+) |
| W17 | SP-0V-1 / FT450-A-A18 | 0.5 | RPM reference (crank -) |
| W18 | OEM-C-7 / FT450-A-A17 | 0.5 | Cam sensor 1 + (G1+) |
| W19 | OEM-C-5 / FT450-A-A8 | 0.5 | Ignition 1 (IGT1) |
| W20 | OEM-C-13 / FT450-A-A9 | 0.5 | Ignition 2 (IGT2) |
| W21 | OEM-D-12 / FT450-A-A1 | 0.5 | Injector 1&7 (#10) |
| W22 | OEM-D-11 / FT450-A-A2 | 0.5 | Injector 2&8 (#20) |
| W23 | OEM-D-24 / FT450-A-A1 | 0.5 | Injector 3&5 (#40) |
| W24 | OEM-D-25 / FT450-A-A2 | 0.5 | Injector 4&6 (#30) |
| W25 | OEM-A-4 / FT450-A-A20 | 0.5 | Throttle position (VTA1) |
| W26 | OEM-A-5 / FT450-A-A24 | 0.5 | Coolant temperature (THW) |
| W27 | OEM-B-4 / FT450-A-A6 | 0.5 | EFI main relay control (MREL) |
| W28 | OEM-B-6 / FT450-A-A3 | 0.5 | Fuel pump relay (FPR) |
| W29 | OEM-B-7 / FT450-A-A4 | 0.5 | A/C clutch relay (ACMG) |
| W30 | OEM-D-19 / FT450-A-A5 | 0.5 | O2 heater 2 (HT2) |
| W31 | OEM-A-17 / FT450-A-A21 | 0.5 | O2 right front (OXR1) |
| W32 | OEM-A-6 / FT450-A-A22 | 0.5 | O2 left front (OXL1) |
| W33 | OEM-B-11 / FT450-A-A23 | 0.5 | O2 right rear (OXR2) |
| W34 | OEM-B-24 / FT450-A-A25 | 0.5 | O2 left rear (OXL2) |
| W35 | OEM-A-16 / FT450-A-A26 | 0.5 | Intake air temperature (THA) |
Bill of materials
No parts in this harness.