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
M150-D-7 Knock Input 1
Ignition power 2
Ignition power 1
GND
GND
M150-D-2 Universal Digital Input 2
M150-D-1 Universal Digital Input 1
GND
GND
M150-C-29 Peak Hold Injector 7
11–12 no data
M150-C-6 Low Side Ignition 4
M150-C-5 Low Side Ignition 3
M150-C-4 Low Side Ignition 2
M150-C-3 Low Side Ignition 1
17 no data
M150-D-8 Universal Digital Input 3
19 no data
5V ref
22 no data
0V sensor
27 no data
29 no data
M150-C-14 Analogue Voltage Input 1
OEM-A
Stock ECU being replaced
1Knock sensor
2Ignition power 2
3Ignition power 1
4Power ground 2
5Power ground 1
6Cam position sensor (T2)
7Crank position sensor (T1)
8Logic ground 2
9Logic ground 1
10A/F sensor heater
11–12 no data
13Ignition coil 4
14Ignition coil 3
15Ignition coil 2
16Ignition coil 1
17 no data
18Vehicle speed sensor
19 no data
21Sensor voltage 1
22 no data
24Sensor ground 1
27 no data
29 no data
30MAP sensor
1 no data
M150-C-24 Low Side Injector 2
M150-C-20 Peak Hold Injector 2
M150-C-23 Low Side Injector 1
M150-C-19 Peak Hold Injector 1
RLY1-R-OUT Relay contact output (switched +12 V to load)
7 no data
M150-D-3 Analogue Temperature Input 1
9 no data
M150-A-23 Digital Input 1
12 no data
M150-C-17 Analogue Voltage Input 4
14 no data
M150-C-30 Peak Hold Injector 8
16 no data
M150-D-5 Analogue Temperature Input 3
M150-B-22 Peak Hold Injector 9
M150-B-23 Peak Hold Injector 10
22–24 no data
OEM-B
Stock ECU being replaced
1 no data
2Injector 4
3Injector 3
4Injector 2
5Injector 1
6VTEC solenoid
7 no data
8Coolant temp sensor
9 no data
11VTEC oil pressure switch
12 no data
13Alternator FR signal
14 no data
15Engine mount control solenoid
16 no data
17Intake air temp sensor
18Alternator control
21Evap canister purge valve
22–24 no data
M150-A-15 Digital Input 2
2–3 no data
M150-A-16 Digital Input 3
5–6 no data
M150-A-17 Digital Input 4
M150-D-9 Universal Digital Input 4
M150-D-10 Universal Digital Input 5
10–14 no data
16–17 no data
OEM-D
Stock ECU being replaced
1Cruise set switch
2–3 no data
4Cruise main switch
5–6 no data
7Cruise resume switch
8Brake pedal position switch
9Cruise clutch signal
10–14 no data
16–17 no data
M150-D-4 Analogue Temperature Input 2
2 no data
GND
6 no data
M150-B-15 Low Side Injector 4
M150-C-27 Peak Hold Injector 5
10 no data
M150-D-17 CAN Bus 1 High
M150-C-21 Peak Hold Injector 3
M150-C-25 Analogue Voltage Input 5
M150-D-20 Analogue Voltage Input 6
M150-D-21 Analogue Voltage Input 7
M150-B-9 Low Side Injector 3
M150-C-22 Peak Hold Injector 4
M150-B-24 Peak Hold Injector 11
M150-A-11 Lambda Narrow Input 1
M150-C-28 Peak Hold Injector 6
M150-D-11 Universal Digital Input 6
23 no data
M150-D-18 CAN Bus 1 Low
M150-D-14 Universal Digital Input 7
31 no data
OEM-E
Stock ECU being replaced
1Coolant temp sensor 2
2 no data
3Logic ground 3
6 no data
7Main relay control
8A/F sensor heater relay
10 no data
11CAN H
12Radiator fan control
14Fuel tank pressure sensor
15Electrical load detector
16Power steering load detector
17Fuel pump relay
18A/C clutch relay
19Evap canister vent shut valve
20Secondary O2 sensor
21Secondary O2 heater
22Brake pedal switch
23 no data
24CAN L
28A/C switch signal
31 no data
M150
M150-A
M150
11Lambda Narrow Input 1
15Digital Input 2
16Digital Input 3
17Digital Input 4
18Sensor 5.0V C2
23Digital Input 1
24Battery Negative 3
25Battery Negative 4
26Sensor 0V C1
27Sensor 0V C2
32Battery Negative 5
33Sensor 0V B1
34Sensor 0V A1
OEM-E-20 Secondary O2 sensor
OEM-D-1 Cruise set switch
OEM-D-4 Cruise main switch
OEM-D-7 Cruise resume switch
5V ref
OEM-B-11 VTEC oil pressure switch
GND
GND
0V sensor
0V sensor
GND
0V sensor
0V sensor
M150-B
M150
8Low Side Injector 5
9Low Side Injector 3
13Battery Positive
15Low Side Injector 4
19Battery Positive
22Peak Hold Injector 9
23Peak Hold Injector 10
24Peak Hold Injector 11
RLY1-R-COIL- Relay coil negative (ECU low-side driver)
OEM-E-17 Fuel pump relay
Battery Positive
OEM-E-7 Main relay control
Battery Positive
OEM-B-18 Alternator control
OEM-B-21 Evap canister purge valve
OEM-E-19 Evap canister vent shut valve
M150-C
M150
3Low Side Ignition 1
4Low Side Ignition 2
5Low Side Ignition 3
6Low Side Ignition 4
10Battery Negative 1
11Battery Negative 2
14Analogue Voltage Input 1
16Analogue Voltage Input 3
17Analogue Voltage Input 4
19Peak Hold Injector 1
20Peak Hold Injector 2
21Peak Hold Injector 3
22Peak Hold Injector 4
23Low Side Injector 1
24Low Side Injector 2
25Analogue Voltage Input 5
26Battery Positive
27Peak Hold Injector 5
28Peak Hold Injector 6
29Peak Hold Injector 7
30Peak Hold Injector 8
OEM-A-16 Ignition coil 1
OEM-A-15 Ignition coil 2
OEM-A-14 Ignition coil 3
OEM-A-13 Ignition coil 4
GND
GND
OEM-A-30 MAP sensor
TPS-J-SIG Throttle position signal
OEM-B-13 Alternator FR signal
OEM-B-5 Injector 1
OEM-B-3 Injector 3
OEM-E-12 Radiator fan control
OEM-E-18 A/C clutch relay
OEM-B-4 Injector 2
OEM-B-2 Injector 4
OEM-E-14 Fuel tank pressure sensor
Battery Positive
OEM-E-8 A/F sensor heater relay
OEM-E-21 Secondary O2 heater
OEM-A-10 A/F sensor heater
OEM-B-15 Engine mount control solenoid
M150-D
M150
1Universal Digital Input 1
2Universal Digital Input 2
3Analogue Temperature Input 1
4Analogue Temperature Input 2
5Analogue Temperature Input 3
7Knock Input 1
8Universal Digital Input 3
9Universal Digital Input 4
10Universal Digital Input 5
11Universal Digital Input 6
14Universal Digital Input 7
15Sensor 0V A
16Sensor 0V B
17CAN Bus 1 High
18CAN Bus 1 Low
20Analogue Voltage Input 6
21Analogue Voltage Input 7
OEM-A-7 Crank position sensor (T1)
OEM-A-6 Cam position sensor (T2)
OEM-B-8 Coolant temp sensor
OEM-E-1 Coolant temp sensor 2
OEM-B-17 Intake air temp sensor
OEM-A-1 Knock sensor
OEM-A-18 Vehicle speed sensor
OEM-D-8 Brake pedal position switch
OEM-D-9 Cruise clutch signal
OEM-E-22 Brake pedal switch
OEM-E-28 A/C switch signal
0V sensor
0V sensor
OEM-E-11 CAN H
OEM-E-24 CAN L
OEM-E-15 Electrical load detector
OEM-E-16 Power steering load detector
RLY1
RLY1-R
RLY1
INRelay contact input (switched +12 V)
OUTRelay contact output (switched +12 V to load)
COIL+Relay coil positive (switched +12 V)
COIL-Relay coil negative (ECU low-side driver)
SP-14V · 5 pins
OEM-B-6 VTEC solenoid
Relay coil positive (switched +12 V)
M150-B-8 Low Side Injector 5
TPS
TPS-J
TPS
GNDSensor ground
SIGThrottle position signal
VCC5V supply in
0V sensor
M150-C-16 Analogue Voltage Input 3
5V supply in
SP-GND · 11 pins
SP-0V · 9 pins
SP-14V · 8 pins
SP-5V · 4 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.