VW Golf/Jetta Mk2 1.8 8v Digifant II → AMP EFI MS3Pro EVO+ (auto)
VW Golf/Jetta Mk2 1.8 8v Digifant II — AMP EFI — MS3Pro EVO+
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-11
Before you start
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.
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 1: read the Findings page before cutting any wire |
| Size of the job | 35 wires · 8 connectors · 0 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-A-14 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | SP-14V-1 | MS3PROEVO-A-35 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-A-13 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-A-19 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-GND-1 | MS3PROEVO-B-3 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | SP-GND-1 | MS3PROEVO-B-5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | MS3PROEVO-B-7 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | MS3PROEVO-B-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-A-5 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-A-6 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-0V-1 | MS3PROEVO-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-0V-1 | MS3PROEVO-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-0V-1 | MS3PROEVO-C-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | MS3PROEVO-C-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | MS3PROEVO-C-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | MS3PROEVO-C-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | MS3PROEVO-C-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-A-17 | MS3PROEVO-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-A-18 | MS3PROEVO-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | MS3PROEVO-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-4 | MS3PROEVO-A-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-25 | MS3PROEVO-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-12 | MS3PROEVO-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-7 | SP-SHD-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | SP-SHD-1 | MS3PROEVO-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-3 | MS3PROEVO-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-21 | MS3PROEVO-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-10 | MS3PROEVO-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A-22 | MS3PROEVO-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-23 | MS3PROEVO-C-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-2 | MS3PROEVO-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-9 | MS3PROEVO-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-1 | MS3PROEVO-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-11 | MS3PROEVO-B-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-16 | MS3PROEVO-B-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
Bench test (before first power-up)
Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).
| # | Probe A | Probe B | Expect | Why | Reading |
|---|---|---|---|---|---|
| 1 | MS3PROEVO-A-35 | MS3PROEVO-A-13 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | MS3PROEVO-A-8 | MS3PROEVO-A-13 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 3 | MS3PROEVO-A-35 | MS3PROEVO-A-8 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 4 | MS3PROEVO-B-3 | MS3PROEVO-A-35 | open (OL) | power ground must not touch +12 V supply | |
| 5 | MS3PROEVO-B-3 | MS3PROEVO-A-8 | open (OL) | power ground must not touch 5 V sensor reference |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MS3PROEVO-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | High current out 1 | — | — | — | — | — | — | — | — |
| 10 | MAT in | — | W32 | — | 0.5 | OEM-A-9 | — | — | — |
| 11 | CLT in | — | W28 | — | 0.5 | OEM-A-10 | — | — | — |
| 12 | Analog In 6 | — | — | — | — | — | — | — | — |
| 13 | Logic Ground | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 14 | PWM / Idle Out 1 | — | W29 | — | 0.5 | OEM-A-22 | — | — | — |
| 15 | CKP− | — | — | — | — | — | — | — | — |
| 16 | Ground Shield Drain | — | W25 | — | 0.5 | SP-SHD-1 | — | — | — |
| 17 | Analog In 7 | — | — | — | — | — | — | — | — |
| 18 | Sensor return | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Analog in 1 | — | W27 | — | 0.5 | OEM-A-21 | — | — | — |
| 2 | High current out 2 | — | — | — | — | — | — | — | — |
| 20 | Analog in 2 | — | — | — | — | — | — | — | — |
| 21 | Analog in 3 | — | — | — | — | — | — | — | — |
| 22 | Analog In 4 | — | — | — | — | — | — | — | — |
| 23 | Analog In 5 | — | — | — | — | — | — | — | — |
| 24 | Tach out | — | — | — | — | — | — | — | — |
| 25 | O2 in | — | W31 | — | 0.5 | OEM-A-2 | — | — | — |
| 26 | CMP+ | — | W19 | — | 0.5 | OEM-A-18 | — | — | — |
| 27 | CMP− | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 28 | Fuel pump relay out | — | W26 | — | 0.5 | OEM-A-3 | — | — | — |
| 29 | PWM out 2 | — | — | — | — | — | — | — | — |
| 3 | Injector out J | — | W23 | — | 0.5 | OEM-A-12 | — | — | — |
| 30 | PWM out 3 | — | — | — | — | — | — | — | — |
| 31 | Knock in 1 | — | W21 | — | 0.5 | OEM-A-4 | — | — | — |
| 32 | Digital switched in 1 | — | W33 | — | 0.5 | OEM-A-1 | — | — | — |
| 33 | CAN L | — | — | — | — | — | — | — | — |
| 34 | CAN H | — | — | — | — | — | — | — | — |
| 35 | 12V+ switched power in | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Injector out I | — | — | — | — | — | — | — | — |
| 5 | High current out 3 | — | — | — | — | — | — | — | — |
| 6 | CKP+ | — | — | — | — | — | — | — | — |
| 7 | Knock In 2 | — | — | — | — | — | — | — | — |
| 8 | 5V+ VREF out | — | W18 | — | 0.5 | OEM-A-17 | — | — | — |
| 9 | TPS in | — | — | — | — | — | — | — | — |
MS3PROEVO-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector out A | — | — | — | — | — | — | — | — |
| 10 | Injector out F | — | — | — | — | — | — | — | — |
| 11 | Injector out G | — | — | — | — | — | — | — | — |
| 12 | Injector out H | — | — | — | — | — | — | — | — |
| 13 | Spark out G | — | W22 | — | 0.5 | OEM-A-25 | — | — | — |
| 14 | Spark out E | — | — | — | — | — | — | — | — |
| 15 | Spark out C | — | — | — | — | — | — | — | — |
| 16 | Spark out H | — | — | — | — | — | — | — | — |
| 17 | Digital frequency in 2 (Hall) | — | — | — | — | — | — | — | — |
| 18 | Ground Shield Drain | — | — | — | — | — | — | — | — |
| 19 | Digital switched 12V in | — | — | — | — | — | — | — | — |
| 2 | Injector out B | — | — | — | — | — | — | — | — |
| 20 | Digital switched in 2 | — | W34 | — | 0.5 | OEM-A-11 | — | — | — |
| 21 | Digital frequency in 3 (unconditioned) | — | — | — | — | — | — | — | — |
| 22 | Digital Frequency in 3 (VR+) | — | — | — | — | — | — | — | — |
| 23 | Digital Frequency In 3 (VR−) | — | — | — | — | — | — | — | — |
| 24 | Spark out F | — | — | — | — | — | — | — | — |
| 25 | Spark out B | — | — | — | — | — | — | — | — |
| 26 | Spark out D | — | — | — | — | — | — | — | — |
| 27 | Spark out A | — | — | — | — | — | — | — | — |
| 28 | Digital frequency in 1 (unconditioned) | — | — | — | — | — | — | — | — |
| 29 | Digital switched in 3 | — | W35 | — | 0.5 | OEM-A-16 | — | — | — |
| 3 | Ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 30 | Stepper IAC out 1B | — | — | — | — | — | — | — | — |
| 31 | Stepper IAC out 1A | — | — | — | — | — | — | — | — |
| 32 | Stepper IAC out 2A | — | — | — | — | — | — | — | — |
| 33 | Stepper IAC out 2B | — | — | — | — | — | — | — | — |
| 34 | Digital Frequency in 1 (VR+) | — | — | — | — | — | — | — | — |
| 35 | Digital Frequency in 1 (VR−) | — | — | — | — | — | — | — | — |
| 4 | Injector out C | — | — | — | — | — | — | — | — |
| 5 | Ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Injector out D | — | — | — | — | — | — | — | — |
| 7 | Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Injector out E | — | — | — | — | — | — | — | — |
| 9 | Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
MS3PROEVO-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | PWM out 5 | — | — | — | — | — | — | — | — |
| 10 | Digital switched in 5 | — | — | — | — | — | — | — | — |
| 11 | Digital switched in 4 | — | — | — | — | — | — | — | — |
| 12 | Digital I/O 5 | — | — | — | — | — | — | — | — |
| 13 | Digital I/O 3 | — | — | — | — | — | — | — | — |
| 14 | Digital I/O 1 | — | — | — | — | — | — | — | — |
| 15 | 5V+ VREF out 2 | — | — | — | — | — | — | — | — |
| 17 | Sensor return | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 18 | Sensor return | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor return | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | PWM out 4 | — | — | — | — | — | — | — | — |
| 20 | Sensor return | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 21 | Sensor return | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | 5V+ VREF out 1 | — | — | — | — | — | — | — | — |
| 3 | Digital out 2 | — | — | — | — | — | — | — | — |
| 4 | Digital out 1 | — | W30 | — | 0.5 | OEM-A-23 | — | — | — |
| 5 | Digital I/O 4 | — | — | — | — | — | — | — | — |
| 6 | Digital I/O 2 | — | — | — | — | — | — | — | — |
| 7 | Analog in 8 | — | — | — | — | — | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Starter signal (term 50) | — | W33 | — | 0.5 | MS3PROEVO-A-32 | — | — | — |
| 10 | Coolant temperature sensor | — | W28 | — | 0.5 | MS3PROEVO-A-11 | — | — | — |
| 11 | Idle/WOT throttle switch | — | W34 | — | 0.5 | MS3PROEVO-B-20 | — | — | — |
| 12 | Injector driver (batch, all 4) | — | W23 | — | 0.5 | MS3PROEVO-A-3 | — | — | — |
| 13 | Ground | — | W3 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | ECU power (control-unit relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 16 | A/C compressor signal | — | W35 | — | 0.5 | MS3PROEVO-B-29 | — | — | — |
| 17 | AFM potentiometer supply | — | W18 | — | 0.5 | MS3PROEVO-A-8 | — | — | — |
| 18 | Hall sender signal (engine speed) | — | W19 | — | 0.5 | MS3PROEVO-A-26 | — | — | — |
| 19 | Ground | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Oxygen (lambda) sensor signal | — | W31 | — | 0.5 | MS3PROEVO-A-25 | — | — | — |
| 21 | AFM signal | — | W27 | — | 0.5 | MS3PROEVO-A-19 | — | — | — |
| 22 | Idle stabilizer valve coil 1 | — | W29 | — | 0.5 | MS3PROEVO-A-14 | — | — | — |
| 23 | Idle stabilizer valve coil 2 | — | W30 | — | 0.5 | MS3PROEVO-C-4 | — | — | — |
| 25 | Ignition timing signal to TCI | — | W22 | — | 0.5 | MS3PROEVO-B-13 | — | — | — |
| 3 | Fuel pump relay control | — | W26 | — | 0.5 | MS3PROEVO-A-28 | — | — | — |
| 4 | Knock sensor signal | — | W21 | — | 0.5 | MS3PROEVO-A-31 | — | — | — |
| 5 | Knock sensor return | — | W9 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sensor ground (CTS/Hall/AFM/throttle) | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | Knock sensor shield | — | W24 | — | 0.5 | SP-SHD-1 | — | — | — |
| 8 | Hall sender supply (distributor) | — | — | — | — | — | — | — | — |
| 9 | Intake air temperature sensor | — | W32 | — | 0.5 | MS3PROEVO-A-10 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W9 | — | 0.5 | OEM-A-5 | — | — | — |
| 1 | — | — | W10 | — | 0.5 | OEM-A-6 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | MS3PROEVO-A-13 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | MS3PROEVO-A-18 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | MS3PROEVO-C-17 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | MS3PROEVO-C-18 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | MS3PROEVO-C-19 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | MS3PROEVO-C-20 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MS3PROEVO-C-21 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | MS3PROEVO-A-27 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-14 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | MS3PROEVO-A-35 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W3 | — | 0.85 | OEM-A-13 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | OEM-A-19 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | MS3PROEVO-B-3 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | MS3PROEVO-B-5 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | MS3PROEVO-B-7 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | MS3PROEVO-B-9 | — | — | — |
SP-SHD
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W24 | — | 0.5 | OEM-A-7 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | MS3PROEVO-A-16 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Starter signal (term 50) | digital_in | MS3PROEVO-A-32 | Digital switched in 1 | digital_in | corroborated | |
| OEM-A-10 | Coolant temperature sensor | temp_in | MS3PROEVO-A-11 | CLT in | temp_in | corroborated | |
| OEM-A-11 | Idle/WOT throttle switch | digital_in | MS3PROEVO-B-20 | Digital switched in 2 | digital_in | corroborated | |
| OEM-A-12 | Injector driver (batch, all 4) | injector_out | MS3PROEVO-A-3 | Injector out J | injector_out | corroborated | |
| OEM-A-13 | Ground | ground | MS3PROEVO-B-3 + MS3PROEVO-B-5 + MS3PROEVO-B-7 + MS3PROEVO-B-9 | Ground + Ground + Ground + Ground | ground | corroborated | |
| OEM-A-14 | ECU power (control-unit relay) | power_in | MS3PROEVO-A-35 | 12V+ switched power in | power_in | corroborated | |
| OEM-A-16 | A/C compressor signal | digital_in | MS3PROEVO-B-29 | Digital switched in 3 | digital_in | corroborated | |
| OEM-A-17 | AFM potentiometer supply | vref | MS3PROEVO-A-8 | 5V+ VREF out | vref | corroborated | |
| OEM-A-18 | Hall sender signal (engine speed) | trigger_in | MS3PROEVO-A-26 | CMP+ | trigger_in | corroborated | |
| OEM-A-19 | Ground | ground | MS3PROEVO-B-3 + MS3PROEVO-B-5 + MS3PROEVO-B-7 + MS3PROEVO-B-9 | Ground + Ground + Ground + Ground | ground | corroborated | |
| OEM-A-2 | Oxygen (lambda) sensor signal | lambda_nb_in | MS3PROEVO-A-25 | O2 in | lambda_nb_in | corroborated | |
| OEM-A-21 | AFM signal | analog_in | MS3PROEVO-A-19 | Analog in 1 | analog_in | corroborated | |
| OEM-A-22 | Idle stabilizer valve coil 1 | low_side_out | MS3PROEVO-A-14 | PWM / Idle Out 1 | low_side_out | corroborated | |
| OEM-A-23 | Idle stabilizer valve coil 2 | low_side_out | MS3PROEVO-C-4 | Digital out 1 | low_side_out | corroborated | |
| OEM-A-25 | Ignition timing signal to TCI | ignition_out | MS3PROEVO-B-13 | Spark out G | ignition_out | corroborated | |
| OEM-A-3 | Fuel pump relay control | low_side_out | MS3PROEVO-A-28 | Fuel pump relay out | low_side_out | corroborated | |
| OEM-A-4 | Knock sensor signal | knock_in | MS3PROEVO-A-31 | Knock in 1 | knock_in | corroborated | |
| OEM-A-5 | Knock sensor return | sensor_ground | MS3PROEVO-A-13 + MS3PROEVO-A-18 + MS3PROEVO-A-27 + MS3PROEVO-C-17 + MS3PROEVO-C-18 + MS3PROEVO-C-19 + MS3PROEVO-C-20 + MS3PROEVO-C-21 | Logic Ground + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground + trigger_in | corroborated | |
| OEM-A-6 | Sensor ground (CTS/Hall/AFM/throttle) | sensor_ground | MS3PROEVO-A-13 + MS3PROEVO-A-18 + MS3PROEVO-A-27 + MS3PROEVO-C-17 + MS3PROEVO-C-18 + MS3PROEVO-C-19 + MS3PROEVO-C-20 + MS3PROEVO-C-21 | Logic Ground + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground + trigger_in | corroborated | |
| OEM-A-7 | Knock sensor shield | shield | MS3PROEVO-A-16 | Ground Shield Drain | shield | corroborated | |
| OEM-A-8 | Hall sender supply (distributor) | power_in | — | — | — | corroborated | |
| OEM-A-9 | Intake air temperature sensor | temp_in | MS3PROEVO-A-10 | MAT in | temp_in | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-14 | SP-14V-1 | 0.85 | no route | ECU power (control-unit relay) | — | |
| W2 | SP-14V-1 | MS3PROEVO-A-35 | 0.85 | no route | 12V+ switched power in | — | |
| W3 | OEM-A-13 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W4 | OEM-A-19 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W5 | SP-GND-1 | MS3PROEVO-B-3 | 0.85 | no route | Ground | — | |
| W6 | SP-GND-1 | MS3PROEVO-B-5 | 0.85 | no route | Ground | — | |
| W7 | SP-GND-1 | MS3PROEVO-B-7 | 0.85 | no route | Ground | — | |
| W8 | SP-GND-1 | MS3PROEVO-B-9 | 0.85 | no route | Ground | — | |
| W9 | OEM-A-5 | SP-0V-1 | 0.5 | no route | Knock sensor return | — | |
| W10 | OEM-A-6 | SP-0V-1 | 0.5 | no route | Sensor ground (CTS/Hall/AFM/throttle) | — | |
| W11 | SP-0V-1 | MS3PROEVO-A-13 | 0.5 | no route | Logic Ground | — | |
| W12 | SP-0V-1 | MS3PROEVO-A-18 | 0.5 | no route | Sensor return | — | |
| W13 | SP-0V-1 | MS3PROEVO-C-17 | 0.5 | no route | Sensor return | — | |
| W14 | SP-0V-1 | MS3PROEVO-C-18 | 0.5 | no route | Sensor return | — | |
| W15 | SP-0V-1 | MS3PROEVO-C-19 | 0.5 | no route | Sensor return | — | |
| W16 | SP-0V-1 | MS3PROEVO-C-20 | 0.5 | no route | Sensor return | — | |
| W17 | SP-0V-1 | MS3PROEVO-C-21 | 0.5 | no route | Sensor return | — | |
| W18 | OEM-A-17 | MS3PROEVO-A-8 | 0.5 | no route | AFM potentiometer supply | — | |
| W19 | OEM-A-18 | MS3PROEVO-A-26 | 0.5 | no route | Hall sender signal (engine speed) | — | |
| W20 | SP-0V-1 | MS3PROEVO-A-27 | 0.5 | no route | CMP− | — | |
| W21 | OEM-A-4 | MS3PROEVO-A-31 | 0.5 | no route | Knock sensor signal | — | |
| W22 | OEM-A-25 | MS3PROEVO-B-13 | 0.5 | no route | Ignition timing signal to TCI | — | |
| W23 | OEM-A-12 | MS3PROEVO-A-3 | 0.5 | no route | Injector driver (batch, all 4) | — | |
| W24 | OEM-A-7 | SP-SHD-1 | 0.5 | no route | Knock sensor shield | — | |
| W25 | SP-SHD-1 | MS3PROEVO-A-16 | 0.5 | no route | Ground Shield Drain | — | |
| W26 | OEM-A-3 | MS3PROEVO-A-28 | 0.5 | no route | Fuel pump relay control | — | |
| W27 | OEM-A-21 | MS3PROEVO-A-19 | 0.5 | no route | AFM signal | — | |
| W28 | OEM-A-10 | MS3PROEVO-A-11 | 0.5 | no route | Coolant temperature sensor | — | |
| W29 | OEM-A-22 | MS3PROEVO-A-14 | 0.5 | no route | Idle stabilizer valve coil 1 | — | |
| W30 | OEM-A-23 | MS3PROEVO-C-4 | 0.5 | no route | Idle stabilizer valve coil 2 | — | |
| W31 | OEM-A-2 | MS3PROEVO-A-25 | 0.5 | no route | Oxygen (lambda) sensor signal | — | |
| W32 | OEM-A-9 | MS3PROEVO-A-10 | 0.5 | no route | Intake air temperature sensor | — | |
| W33 | OEM-A-1 | MS3PROEVO-A-32 | 0.5 | no route | Starter signal (term 50) | — | |
| W34 | OEM-A-11 | MS3PROEVO-B-20 | 0.5 | no route | Idle/WOT throttle switch | — | |
| W35 | OEM-A-16 | MS3PROEVO-B-29 | 0.5 | no route | A/C compressor signal | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (2)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | REQUIRED_UNMAPPED | OEM-A-8 | Required OEM function "Hall sender supply (distributor)" (power_in) is not connected to the new ECU. |
| info | NET_FAMILY | OEM-A-5 ↔ MS3PROEVO-A-27 | OEM-A-5 "Knock sensor return" [sensor_ground] is wired to MS3PROEVO-A-27 "CMP−" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - OEM-A 8: Hall sender supply (distributor): no rule for class sensor_supply_in; wire by hand Not wired: - MS3PROEVO-B 19: Digital switched 12V in: not fed (the stock ECU has no ignition-sense pin); feed it from a switched-ignition source
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | AMP EFI: MS3Pro EVO+ / EVO+ HC manual (fw 1.6.1) pinout tables | https://cdn.shopify.com/s/files/1/0960/0014/7754/files/MS3Pro_User_Manual_Firmware_1.6.1_EVO.pdf?v=1760643022 | archive | 2026-10-05 | d5dd8a31822d |
| 2 | community_copy | a2resource: Digifant II engine controller pinout (VW Golf/Jetta Mk2 1.8 8v) | http://www.a2resource.com/electrical/management/digifant2.html | — | — | — |
| 2 | community_copy | drive2.ru: VW Golf Mk2 PF Digifant II ECU pinout | https://www.drive2.ru/l/9886121 | — | — | — |