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.

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Stock ECU being replaced

P8-C1-37 Injector 1

P8-C1-18 Injector 2

P8-C1-54 Injector 3

P8-C1-41 Fuel Pump Relay

P8-C1-21 Turbo Pressure Valve

P8-C1-53 Injector 7

P8-C1-23 Turbo ALS Valve

P8-C1-1 Coil 1

GND

ECM power source (IGP1)

P8-C1-36 Injector 4

P8-C1-17 Injector 5

P8-C1-35 Injector 6

P8-C1-16 Injector 8

P8-C1-4 Idle Valve

P8-C1-6 Shift Light

P8-C1-38 Coil 2

GND

0V sensor

OEM-A

Stock ECU being replaced

1Injector 1 (INJ1)

2Injector 2 (INJ2)

3Injector 3 (INJ3)

5Fuel pump relay (FLR1)

8A/C clutch relay (ACC)

9Front secondary O2 heater (FSO2SHTC)

10Rear secondary O2 heater (RSO2SHTC)

11Ignition coil 1 (IGN COIL1)

12Power ground (PG1)

13ECM power source (IGP1)

14Injector 4 (INJ4)

15Injector 5 (INJ5)

16Injector 6 (INJ6)

17EVAP bypass solenoid (2WBS)

22Front primary O2 heater (FPO2SHTC)

23Rear primary O2 heater (RPO2SHTC)

24Ignition coil 2 (IGN COIL2)

25Power ground (PG2)

26Logic ground (LG1)

P8-C1-31 Launch Button

P8-C1-3 Coil 6

P8-C1-32 Traction On/Off

P8-C1-33 Shift Cut

P8-C1-9 Right Driven Wheel

P8-C1-27 Cam Sensor

P8-C1-29 Left Driven Wheel

P8-C1-8 Crank Sensor

0V sensor

P8-C1-39 Coil 5

P8-C1-2 Coil 4

P8-C1-20 Coil 3

0V sensor

OEM-B

Stock ECU being replaced

1VTEC pressure switch front (VTP SWF)

2Ignition coil 6 (IGN COIL6)

3VTEC pressure switch rear (VTP SWR)

4Neutral switch (NT SW, M/T)

5Cylinder position sensor 2 + (CYP 2P)

6Cylinder position sensor 1 + (CYP 1P)

7Crank position sensor 2 + (CKP 2P)

8Crank position sensor 1 + (CKP 1P)

9Logic ground (LG2)

10Ignition coil 5 (IGN COIL5)

11Ignition coil 4 (IGN COIL4)

12Ignition coil 3 (IGN COIL3)

13Cylinder position sensor 2 return (CYP 2M)

14Cylinder position sensor 1 return (CYP 1M)

15Crank position sensor 2 return (CKP 2M)

16Crank position sensor 1 return (CKP 1M)

ECM power source (IGP2)

P8-C1-50 Undriven Wheel (optional)

P8-C1-11 Undriven Wheel (must)

P8-C1-24 Tacho

OEM-C

Stock ECU being replaced

1ECM power source (IGP2)

4Clutch switch (MTCLS, M/T)

7Vehicle speed sensor (VSS)

8Engine speed pulse (NEP)

P8-C1-26 Water Temp

P8-C1-45 Air Temp

P8-C1-30 Map

5V ref

0V sensor

P8-C1-7 Analogue Input 2 Or Log Switch

P8-C1-12 Lambda Signal

P8-C1-44 Analogue Input 3

OEM-D

Stock ECU being replaced

7Engine coolant temperature (ECT)

8Intake air temperature (IAT)

9MAP sensor

10Sensor 5V supply (VCC2)

11Sensor ground (SG2)

12Throttle position sensor (TPS)

16Front secondary O2 signal (O2S FS)

17Rear secondary O2 signal (O2S RS)

5V ref

0V sensor

P8-C1-42 Cam Phase Valve/Aux Out 4

P8-C1-14 Traction Wet/Dry

P8-C1-25 Analogue Input 1

P8-C1-48 Throttle Wiper

5V ref

0V sensor

P8-C1-13 Map2/ALS/Ana1 On/Off

P8-C1-5 Aux Out 2

P8-C1-43 Aux Out 3

OEM-F

Stock ECU being replaced

1Sensor 5V supply (VCC1)

2Sensor ground (SG1)

4Fuel pump relay 2 (FLR2)

6Brake switch 2 (BKSW2)

12Accelerator pedal position 2 (AP2)

13Accelerator pedal position 1 (AP1)

14Accelerator pedal 5V supply (VCC3)

15Accelerator pedal ground (SG3)

16Brake switch 1 (BKSW1)

19VTEC solenoid front (VT SOLF)

20VTEC solenoid rear (VT SOLR)

Throttle motor power source 1 (IGM1)

Throttle motor power source 2 (IGM2)

GND

Throttle motor common power phases 1&3 (COM1)

Throttle motor common power phases 2&4 (COM2)

OEM-G

Stock ECU being replaced

2Throttle motor power source 1 (IGM1)

3Throttle motor power source 2 (IGM2)

7Throttle motor ground 1 (PGM1)

8Throttle motor ground 2 (PGM2)

9Throttle motor common power phases 1&3 (COM1)

10Throttle motor common power phases 2&4 (COM2)

P8-C1

1Coil 1

2Coil 4

3Coil 6

4Idle Valve

5Aux Out 2

6Shift Light

7Analogue Input 2 Or Log Switch

8Crank Sensor

9Right Driven Wheel

105 Volts

11Undriven Wheel (must)

12Lambda Signal

13Map2/ALS/Ana1 On/Off

14Traction Wet/Dry

15Power Ground

16Injector 8

17Injector 5

18Injector 2

1912 Volts

20Coil 3

21Turbo Pressure Valve

23Turbo ALS Valve

24Tacho

25Analogue Input 1

26Water Temp

27Cam Sensor

285 Volts

29Left Driven Wheel

30Map

31Launch Button

32Traction On/Off

33Shift Cut

34Power Ground

35Injector 6

36Injector 4

37Injector 1

38Coil 2

39Coil 5

41Fuel Pump Relay

42Cam Phase Valve/Aux Out 4

43Aux Out 3

44Analogue Input 3

45Air Temp

46Signal Ground

47Signal Ground

48Throttle Wiper

49Lambda Earth

50Undriven Wheel (optional)

51Signal Ground

525 Volts

53Injector 7

54Injector 3

55Power Ground

OEM-A-11 Ignition coil 1 (IGN COIL1)

OEM-B-11 Ignition coil 4 (IGN COIL4)

OEM-B-2 Ignition coil 6 (IGN COIL6)

OEM-A-22 Front primary O2 heater (FPO2SHTC)

OEM-F-19 VTEC solenoid front (VT SOLF)

OEM-A-23 Rear primary O2 heater (RPO2SHTC)

OEM-D-12 Throttle position sensor (TPS)

OEM-B-8 Crank position sensor 1 + (CKP 1P)

OEM-B-5 Cylinder position sensor 2 + (CYP 2P)

5V ref

OEM-C-7 Vehicle speed sensor (VSS)

OEM-D-16 Front secondary O2 signal (O2S FS)

OEM-F-16 Brake switch 1 (BKSW1)

OEM-F-6 Brake switch 2 (BKSW2)

GND

OEM-A-17 EVAP bypass solenoid (2WBS)

OEM-A-15 Injector 5 (INJ5)

OEM-A-2 Injector 2 (INJ2)

12 Volts

OEM-B-12 Ignition coil 3 (IGN COIL3)

OEM-A-8 A/C clutch relay (ACC)

OEM-A-10 Rear secondary O2 heater (RSO2SHTC)

OEM-C-8 Engine speed pulse (NEP)

OEM-F-12 Accelerator pedal position 2 (AP2)

OEM-D-7 Engine coolant temperature (ECT)

OEM-B-6 Cylinder position sensor 1 + (CYP 1P)

5V ref

OEM-B-7 Crank position sensor 2 + (CKP 2P)

OEM-D-9 MAP sensor

OEM-B-1 VTEC pressure switch front (VTP SWF)

OEM-B-3 VTEC pressure switch rear (VTP SWR)

OEM-B-4 Neutral switch (NT SW, M/T)

GND

OEM-A-16 Injector 6 (INJ6)

OEM-A-14 Injector 4 (INJ4)

OEM-A-1 Injector 1 (INJ1)

OEM-A-24 Ignition coil 2 (IGN COIL2)

OEM-B-10 Ignition coil 5 (IGN COIL5)

OEM-A-5 Fuel pump relay (FLR1)

OEM-F-4 Fuel pump relay 2 (FLR2)

OEM-F-20 VTEC solenoid rear (VT SOLR)

OEM-D-17 Rear secondary O2 signal (O2S RS)

OEM-D-8 Intake air temperature (IAT)

0V sensor

OEM-F-13 Accelerator pedal position 1 (AP1)

0V sensor

OEM-C-4 Clutch switch (MTCLS, M/T)

0V sensor

5V ref

OEM-A-9 Front secondary O2 heater (FSO2SHTC)

OEM-A-3 Injector 3 (INJ3)

GND

SP-GND · 8 pins

SP-0V · 14 pins

SP-14V · 8 pins