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.

100%

Stock ECU being replaced

ECU power +14V (main relay)

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

P8-C1-43 Aux Out 3

P8-C1-1 Coil 1

P8-C1-38 Coil 2

P8-C1-41 Fuel Pump Relay

P8-C1-14 Traction Wet/Dry

P8-C1-31 Launch Button

P8-C1-32 Traction On/Off

P8-C1-5 Aux Out 2

P8-C1-33 Shift Cut

OEM-1

Stock ECU being replaced

BECU power +14V (main relay)

CStart signal

EMalfunction indicator lamp (MIL)

GIgnition 1 (coils 1+4, wasted spark)

HIgnition 2 (coils 2+3, wasted spark)

JA/C relay

NWide-open throttle switch

PPower steering pressure switch

QA/C request

RA/C extra cooling fan relay

VNeutral/clutch switch

GND

0V sensor

P8-C1-8 Crank Sensor

F no data

P8-C1-27 Cam Sensor

P8-C1-24 Tacho

5V ref

P8-C1-11 Undriven Wheel (must)

P8-C1-48 Throttle Wiper

P8-C1-12 Lambda Signal

P8-C1-25 Analogue Input 1

P8-C1-45 Air Temp

P8-C1-26 Water Temp

P8-C1-37 Injector 1

P8-C1-18 Injector 2

P8-C1-4 Idle Valve

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

P8-C1-54 Injector 3

P8-C1-36 Injector 4

OEM-2

Stock ECU being replaced

APower ground

BPower ground

CSensor ground (E2)

DSensor ground (E2)

ECrank position (CAS NE)

F no data

GCam position (CAS G)

ITachometer output

K+5V sensor supply

LIdle switch (TPS)

MTPS signal (A/T)

NO2 sensor

OAir flow meter (AFM)

PIntake air temperature (IAT)

QCoolant temperature (ECT)

UInjector 1 & 3 (batch)

VInjector 2 & 4 (batch)

WIdle speed control (ISC) valve

XPurge solenoid valve

YInjector 3 (California sequential)

ZInjector 4 (California sequential)

P8-C1

1Coil 1

4Idle Valve

5Aux Out 2

8Crank Sensor

105 Volts

11Undriven Wheel (must)

12Lambda Signal

13Map2/ALS/Ana1 On/Off

14Traction Wet/Dry

15Power Ground

18Injector 2

1912 Volts

24Tacho

25Analogue Input 1

26Water Temp

27Cam Sensor

31Launch Button

32Traction On/Off

33Shift Cut

34Power Ground

36Injector 4

37Injector 1

38Coil 2

41Fuel Pump Relay

42Cam Phase Valve/Aux Out 4

43Aux Out 3

45Air Temp

46Signal Ground

47Signal Ground

48Throttle Wiper

49Lambda Earth

51Signal Ground

54Injector 3

55Power Ground

OEM-1-G Ignition 1 (coils 1+4, wasted spark)

OEM-2-W Idle speed control (ISC) valve

OEM-1-R A/C extra cooling fan relay

OEM-2-E Crank position (CAS NE)

5V ref

OEM-2-L Idle switch (TPS)

OEM-2-N O2 sensor

OEM-1-C Start signal

OEM-1-N Wide-open throttle switch

GND

OEM-2-V Injector 2 & 4 (batch)

12 Volts

OEM-2-I Tachometer output

OEM-2-O Air flow meter (AFM)

OEM-2-Q Coolant temperature (ECT)

OEM-2-G Cam position (CAS G)

OEM-1-P Power steering pressure switch

OEM-1-Q A/C request

OEM-1-V Neutral/clutch switch

GND

OEM-2-Z Injector 4 (California sequential)

OEM-2-U Injector 1 & 3 (batch)

OEM-1-H Ignition 2 (coils 2+3, wasted spark)

OEM-1-J A/C relay

OEM-2-X Purge solenoid valve

OEM-1-E Malfunction indicator lamp (MIL)

OEM-2-P Intake air temperature (IAT)

0V sensor

OEM-2-M TPS signal (A/T)

0V sensor

OEM-2-Y Injector 3 (California sequential)

GND

SP-14V · 3 pins

SP-GND · 6 pins

SP-0V · 7 pins