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
T12-C1-5 PWM 1
T12-C1-3 PWM 3
T12-C1-16 Injector 5
T12-C1-15 Injector 6
T12-C1-25 Injector 4
GND
T12-C3-24 PWM 6
T12-C3-25 PWM 7
T12-C2-5 Analogue 3
GND
T12-C2-12 Crank
T12-C2-22 Cam 1
T12-C1-26 Coil 4
T12-C1-27 Coil 6
T12-C1-11 Coil 5
Battery voltage (constant +12V)
T12-C1-4 PWM 2
0V sensor
T12-C3-22 PWM 4
T12-C1-34 Injector 3
T12-C1-17 Injector 2
T12-C1-9 Injector 1
GND
T12-C3-23 PWM 5
T12-C3-9 Lambda 1 Heater Negative
0V sensor
T12-C2-10 Analogue 1
T12-C2-2 Wheel 1
0V sensor
0V sensor
T12-C3-10 PWM 8
T12-C1-10 Coil 1
T12-C1-18 Coil 2
T12-C1-1 Coil 3
ECU power (+14V from main relay)
GND
5V ref
T12-C3-32 Knock 2
T12-C3-31 Knock 1
0V sensor
T12-C2-1 Analogue 2
T12-C2-25 Thermistor 2
T12-C2-7 Thermistor 1
OEM-X
Stock ECU being replaced
1Fuel pump relay control
2Idle speed control valve (close winding)
3Injector cylinder 5
4Injector cylinder 6
5Injector cylinder 4
6Ground (injector output stages)
7VANOS intake camshaft solenoid
8Check engine light (MIL)
13O2 sensor signal
15Ground
16Crank position sensor (+)
17Camshaft position sensor (Hall)
23Ignition coil cylinder 4
24Ignition coil cylinder 6
25Ignition coil cylinder 5
26Battery voltage (constant +12V)
27Main relay control
28Ground (electronics + sensor shielding)
29Idle speed control valve (open winding)
31Injector cylinder 3
32Injector cylinder 2
33Injector cylinder 1
34Ground (output stages)
36Evap purge solenoid
38O2 sensor heater relay control
40O2 sensor signal ground
41Mass air flow (MAF) signal
42Vehicle speed signal
43Crank position sensor (-)
44Sensor ground (IAT/ECT/TPS)
47Tachometer output
50Ignition coil cylinder 1
51Ignition coil cylinder 2
52Ignition coil cylinder 3
54ECU power (+14V from main relay)
55Ground (ignition)
59+5V sensor supply
69Knock sensor cylinders 4-6
70Knock sensor cylinders 1-3
71Knock sensor ground/shield
73Throttle position (TPS)
77Intake air temperature (IAT)
78Engine coolant temperature (ECT)
T12
T12-C1
T12
1Coil 3
3PWM 3
4PWM 2
5PWM 1
9Injector 1
10Coil 1
11Coil 5
13Power Ground 1
14Power Ground 2
15Injector 6
16Injector 5
17Injector 2
18Coil 2
25Injector 4
26Coil 4
27Coil 6
31Ignition 12v In
34Injector 3
OEM-X-52 Ignition coil cylinder 3
OEM-X-2 Idle speed control valve (close winding)
OEM-X-27 Main relay control
OEM-X-1 Fuel pump relay control
OEM-X-33 Injector cylinder 1
OEM-X-50 Ignition coil cylinder 1
OEM-X-25 Ignition coil cylinder 5
GND
GND
OEM-X-4 Injector cylinder 6
OEM-X-3 Injector cylinder 5
OEM-X-32 Injector cylinder 2
OEM-X-51 Ignition coil cylinder 2
OEM-X-5 Injector cylinder 4
OEM-X-23 Ignition coil cylinder 4
OEM-X-24 Ignition coil cylinder 6
Ignition 12v In
OEM-X-31 Injector cylinder 3
T12-C2
T12
1Analogue 2
2Wheel 1
5Analogue 3
7Thermistor 1
10Analogue 1
12Crank
21Sensor Ground
22Cam 1
245v Output
25Thermistor 2
33Sensor Ground
OEM-X-73 Throttle position (TPS)
OEM-X-42 Vehicle speed signal
OEM-X-13 O2 sensor signal
OEM-X-78 Engine coolant temperature (ECT)
OEM-X-41 Mass air flow (MAF) signal
OEM-X-16 Crank position sensor (+)
0V sensor
OEM-X-17 Camshaft position sensor (Hall)
5V ref
OEM-X-77 Intake air temperature (IAT)
0V sensor
T12-C3
T12
9Lambda 1 Heater Negative
10PWM 8
22PWM 4
23PWM 5
24PWM 6
25PWM 7
26Permanent 12v
31Knock 1
32Knock 2
OEM-X-38 O2 sensor heater relay control
OEM-X-47 Tachometer output
OEM-X-29 Idle speed control valve (open winding)
OEM-X-36 Evap purge solenoid
OEM-X-7 VANOS intake camshaft solenoid
OEM-X-8 Check engine light (MIL)
Permanent 12v
OEM-X-70 Knock sensor cylinders 1-3
OEM-X-69 Knock sensor cylinders 4-6
SP-GND · 7 pins
SP-14V · 3 pins
SP-0V · 8 pins
Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.
48 / 48 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
| Wire | From | To | Signal | Gauge | Colour | Stripe | Ident | Flags | |
|---|---|---|---|---|---|---|---|---|---|
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — |