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
Ignition power 2
Ignition power 1
GND
GND
MS3PROMINI-A-32 CMP+
MS3PROMINI-A-30 CKP+
GND
GND
11–12 no data
MS3PROMINI-A-20 Spark out D
MS3PROMINI-A-19 Spark out C
MS3PROMINI-A-18 Spark out B
MS3PROMINI-A-17 Spark out A
17 no data
MS3PROMINI-A-34 Digital frequency in 1 (Hall)
19 no data
5V ref
22 no data
0V sensor
27 no data
29 no data
MS3PROMINI-A-13 Analog in 1
OEM-A
Stock ECU being replaced
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
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
MS3PROMINI-A-5 Injector out A
MS3PROMINI-A-12 Injector out H
MS3PROMINI-A-11 Injector out G
MS3PROMINI-A-10 Injector out F
RLY1-R-OUT Relay contact output (switched +12 V to load)
7 no data
MS3PROMINI-A-26 CLT in
9 no data
MS3PROMINI-A-29 Digital switched in 1 / Flex fuel
12 no data
14 no data
16 no data
MS3PROMINI-A-16 Analog in 4
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
14 no data
16 no data
17Intake air temp sensor
22–24 no data
MS3PROMINI-A-35 Digital frequency in 2 (Hall)
2–3 no data
5–6 no data
10–14 no data
16–17 no data
OEM-D
Stock ECU being replaced
1Cruise set switch
2–3 no data
5–6 no data
10–14 no data
16–17 no data
MS3PROMINI-A-27 IAT in
2 no data
GND
6 no data
MS3PROMINI-A-3 PWM out 1 / Idle
10 no data
MS3PROMINI-A-25 CAN High
MS3PROMINI-A-8 Injector out D
MS3PROMINI-A-4 Fuel pump out
MS3PROMINI-A-9 Injector out E
MS3PROMINI-A-15 Analog in 3
23 no data
MS3PROMINI-A-24 CAN Low
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
10 no data
11CAN H
12Radiator fan control
17Fuel pump relay
18A/C clutch relay
20Secondary O2 sensor
23 no data
24CAN L
31 no data
MS3PROMINI
MS3PROMINI-A
MS3PROMINI
112V+ switched power in
2+5V VREF out
3PWM out 1 / Idle
4Fuel pump out
5Injector out A
6Injector out B
8Injector out D
9Injector out E
10Injector out F
11Injector out G
12Injector out H
13Analog in 1
14Analog in 2
15Analog in 3
16Analog in 4
17Spark out A
18Spark out B
19Spark out C
20Spark out D
21Sensor ground
22Power ground
23Power ground
24CAN Low
25CAN High
26CLT in
27IAT in
29Digital switched in 1 / Flex fuel
30CKP+
32CMP+
34Digital frequency in 1 (Hall)
35Digital frequency in 2 (Hall)
12V+ switched power in
5V ref
OEM-E-7 Main relay control
OEM-E-17 Fuel pump relay
OEM-B-2 Injector 4
RLY1-R-COIL- Relay coil negative (ECU low-side driver)
OEM-E-12 Radiator fan control
OEM-E-18 A/C clutch relay
OEM-B-5 Injector 1
OEM-B-4 Injector 2
OEM-B-3 Injector 3
OEM-A-30 MAP sensor
TPS-J-SIG Throttle position signal
OEM-E-20 Secondary O2 sensor
OEM-B-17 Intake air temp sensor
OEM-A-16 Ignition coil 1
OEM-A-15 Ignition coil 2
OEM-A-14 Ignition coil 3
OEM-A-13 Ignition coil 4
0V sensor
GND
GND
OEM-E-24 CAN L
OEM-E-11 CAN H
OEM-B-8 Coolant temp sensor
OEM-E-1 Coolant temp sensor 2
OEM-B-11 VTEC oil pressure switch
OEM-A-7 Crank position sensor (T1)
OEM-A-6 Cam position sensor (T2)
OEM-A-18 Vehicle speed sensor
OEM-D-1 Cruise set switch
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 · 3 pins
OEM-B-6 VTEC solenoid
Relay coil positive (switched +12 V)
MS3PROMINI-A-6 Injector out B
TPS
TPS-J
TPS
GNDSensor ground
SIGThrottle position signal
VCC5V supply in
0V sensor
MS3PROMINI-A-14 Analog in 2
5V supply in
SP-5V1 · 5 pins
SP-14V · 6 pins
SP-GND · 8 pins
SP-0V · 4 pins
SP-5V · 5 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.
46 / 46 connections
Columns ▾
Lengths need a layout. Add bundles in Layout.
Not set yet: signal, colour, stripe, ident.
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