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 (+B2, main relay)
GND
MS3PROMINI-A-27 IAT in
MS3PROMINI-A-29 Digital switched in 1 / Flex fuel
MS3PROMINI-A-24 CAN Low
MS3PROMINI-A-25 CAN High
MS3PROMINI-A-13 Analog in 1
0V sensor
OEM-A33
Stock ECU being replaced
1ECU power (+B2, main relay)
4Power ground (EC)
12Intake air temperature (THA, in MAF)
14Starter signal (STSW2)
18CAN low (CANL)
19CAN high (CANH)
22Mass air flow (VG)
29MAF sensor ground (E2G)
GND
GND
GND
ECU power (+B, main relay)
MS3PROMINI-A-32 CMP+
MS3PROMINI-A-35 Digital frequency in 2 (Hall)
MS3PROMINI-A-30 CKP+
MS3PROMINI-A-14 Analog in 2
MS3PROMINI-A-34 Digital frequency in 1 (Hall)
MS3PROMINI-A-33 CMP-
0V sensor
5V ref
OEM-A34
Stock ECU being replaced
1Power ground (E03)
2Power ground (E04)
3Power ground (E05)
6ECU power (+B, main relay)
14VVT cam sensor exhaust bank 1 (EV1+)
15VVT cam sensor intake bank 2 (VV2+)
16Crank position (NE+)
20Manifold absolute pressure (PIM)
25VVT cam sensor exhaust bank 2 (EV2+)
26VVT cam sensor intake bank 1 (VV1+)
27Crank position return (NE-)
34OCV power source (VCV, 5V)
MS3PROMINI-A-3 PWM out 1 / Idle
MS3PROMINI-A-4 Fuel pump out
5V ref
5V ref
MS3PROMINI-A-16 Analog in 4
0V sensor
0V sensor
MS3PROMINI-A-28 TPS in
OEM-A35
Stock ECU being replaced
12Cooling fan relay 2 (FAN2)
13EFI main relay 1 (SSHUT)
21Accelerator pedal 5V supply (VCPA)
22Accelerator pedal 5V supply (VCP2)
23Accelerator pedal position (VPA)
29Accelerator pedal ground (EPA)
30Accelerator pedal ground (EPA2)
31Accelerator pedal position 2 (VPA2)
GND
GND
MS3PROMINI-A-20 Spark out D
MS3PROMINI-A-18 Spark out B
MS3PROMINI-A-10 Injector out F
MS3PROMINI-A-8 Injector out D
MS3PROMINI-A-11 Injector out G
5V ref
MS3PROMINI-A-17 Spark out A
MS3PROMINI-A-12 Injector out H
MS3PROMINI-A-9 Injector out E
MS3PROMINI-A-6 Injector out B
MS3PROMINI-A-5 Injector out A
MS3PROMINI-A-15 Analog in 3
0V sensor
MS3PROMINI-A-26 CLT in
MS3PROMINI-A-19 Spark out C
MS3PROMINI-A-7 Injector out C
OEM-A36
Stock ECU being replaced
3Power ground (E02)
4Power ground (E01)
8Ignition coil 4 (IGT4)
10Ignition coil 2 (IGT2)
12Injector 1 port (#10)
13Injector 4 port (#40)
14Injector 1 direct (#1)
19Sensor 5V supply (VC)
21Ignition coil 1 (IGT1)
22Injector 2 port (#20)
23Injector 4 direct (#4)
24Injector 3 direct (#3)
25Injector 2 direct (#2)
28Throttle position 2 (VTA2)
29Sensor ground (E1)
30Engine coolant temperature (THW)
31Ignition coil 3 (IGT3)
32Injector 3 port (#30)
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
7Injector out C
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
28TPS in
29Digital switched in 1 / Flex fuel
30CKP+
32CMP+
33CMP-
34Digital frequency in 1 (Hall)
35Digital frequency in 2 (Hall)
12V+ switched power in
5V ref
OEM-A35-12 Cooling fan relay 2 (FAN2)
OEM-A35-13 EFI main relay 1 (SSHUT)
OEM-A36-25 Injector 2 direct (#2)
OEM-A36-24 Injector 3 direct (#3)
OEM-A36-32 Injector 3 port (#30)
OEM-A36-13 Injector 4 port (#40)
OEM-A36-23 Injector 4 direct (#4)
OEM-A36-12 Injector 1 port (#10)
OEM-A36-14 Injector 1 direct (#1)
OEM-A36-22 Injector 2 port (#20)
OEM-A33-22 Mass air flow (VG)
OEM-A34-20 Manifold absolute pressure (PIM)
OEM-A36-28 Throttle position 2 (VTA2)
OEM-A35-23 Accelerator pedal position (VPA)
OEM-A36-21 Ignition coil 1 (IGT1)
OEM-A36-10 Ignition coil 2 (IGT2)
OEM-A36-31 Ignition coil 3 (IGT3)
OEM-A36-8 Ignition coil 4 (IGT4)
0V sensor
GND
GND
OEM-A33-18 CAN low (CANL)
OEM-A33-19 CAN high (CANH)
OEM-A36-30 Engine coolant temperature (THW)
OEM-A33-12 Intake air temperature (THA, in MAF)
OEM-A35-31 Accelerator pedal position 2 (VPA2)
OEM-A33-14 Starter signal (STSW2)
OEM-A34-16 Crank position (NE+)
OEM-A34-14 VVT cam sensor exhaust bank 1 (EV1+)
OEM-A34-26 VVT cam sensor intake bank 1 (VV1+)
OEM-A34-25 VVT cam sensor exhaust bank 2 (EV2+)
OEM-A34-15 VVT cam sensor intake bank 2 (VV2+)
SP-14V · 4 pins
SP-GND · 9 pins
SP-5V1 · 6 pins
SP-0V · 7 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.
51 / 51 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 | |
|---|---|---|---|---|---|---|---|---|---|
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — | |||||||||
| — |