VW Corrado VR6 12v (AAA) Motronic M2.9 OBD1 → Link G5 Voodoo Neo 4 (auto)
VW Corrado VR6 12v (AAA) Motronic M2.9 OBD1 — Link — G5 Voodoo Neo 4
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-20
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 | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 51 wires · 9 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-23 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | SP-14V-1 | G5VOODOONEO4-B-B5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-A-38 | MAIN-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | NEW-BATT-1 | MAIN-R-IN | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | MAIN-R-COIL- | SP-GND-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | MAIN-R-OUT | G5VOODOONEO4-A-A5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-1 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-A-10 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-A-55 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-A-56 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-A-7 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | G5VOODOONEO4-A-A25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | G5VOODOONEO4-A-A34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-GND-1 | G5VOODOONEO4-B-B25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-GND-1 | G5VOODOONEO4-B-B34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-A-16 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-A-33 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-A-67 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | G5VOODOONEO4-A-A24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | G5VOODOONEO4-B-B22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-41 | G5VOODOONEO4-A-A32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-68 | G5VOODOONEO4-A-A8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-44 | G5VOODOONEO4-A-A9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-34 | G5VOODOONEO4-B-B9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-8 | G5VOODOONEO4-A-A13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-60 | G5VOODOONEO4-A-A12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-52 | G5VOODOONEO4-A-A11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-24 | G5VOODOONEO4-A-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A-3 | G5VOODOONEO4-A-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-26 | G5VOODOONEO4-A-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-4 | G5VOODOONEO4-A-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-25 | G5VOODOONEO4-B-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-2 | G5VOODOONEO4-B-B3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-17 | G5VOODOONEO4-A-A14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-40 | G5VOODOONEO4-A-A17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-14 | G5VOODOONEO4-A-A15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-A-49 | G5VOODOONEO4-A-A21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-A-6 | G5VOODOONEO4-A-A20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-9 | G5VOODOONEO4-A-A19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-27 | G5VOODOONEO4-A-A29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-31 | G5VOODOONEO4-A-A28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-5 | G5VOODOONEO4-A-A27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-53 | G5VOODOONEO4-B-B30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-22 | G5VOODOONEO4-B-B29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-20 | G5VOODOONEO4-A-A22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A-15 | G5VOODOONEO4-A-A16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A-36 | G5VOODOONEO4-B-B6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-A-65 | G5VOODOONEO4-A-A30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-A-37 | G5VOODOONEO4-A-A31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-A-39 | G5VOODOONEO4-A-A23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | NEW-KEYON-1 | G5VOODOONEO4-A-A6 | 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 | G5VOODOONEO4-A-A24 | G5VOODOONEO4-A-A32 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 2 | G5VOODOONEO4-A-A24 | G5VOODOONEO4-A-A5 | open (OL) | sensor ground must not touch +12 V supply | |
| 3 | G5VOODOONEO4-A-A24 | G5VOODOONEO4-B-B5 | open (OL) | sensor ground must not touch +12 V supply | |
| 4 | G5VOODOONEO4-A-A24 | MAIN-R-COIL+ | open (OL) | sensor ground must not touch +12 V supply | |
| 5 | G5VOODOONEO4-A-A24 | NEW-BATT-1 | open (OL) | sensor ground must not touch +12 V supply | |
| 6 | G5VOODOONEO4-A-A25 | G5VOODOONEO4-A-A32 | open (OL) | power ground must not touch 5 V sensor reference | |
| 7 | G5VOODOONEO4-A-A25 | G5VOODOONEO4-A-A5 | open (OL) | power ground must not touch +12 V supply | |
| 8 | G5VOODOONEO4-A-A25 | G5VOODOONEO4-B-B5 | open (OL) | power ground must not touch +12 V supply | |
| 9 | G5VOODOONEO4-A-A25 | MAIN-R-COIL+ | open (OL) | power ground must not touch +12 V supply | |
| 10 | G5VOODOONEO4-A-A25 | NEW-BATT-1 | open (OL) | power ground must not touch +12 V supply | |
| 11 | G5VOODOONEO4-A-A32 | G5VOODOONEO4-A-A5 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 12 | G5VOODOONEO4-A-A32 | NEW-BATT-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 13 | G5VOODOONEO4-B-B5 | G5VOODOONEO4-A-A32 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 14 | MAIN-R-COIL+ | G5VOODOONEO4-A-A32 | open (OL) | +12 V supply 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
G5VOODOONEO4-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | Injection 4 | — | W31 | — | 0.5 | OEM-A-4 | — | — | — |
| A10 | Ignition 4 | — | — | — | — | — | — | — | — |
| A11 | Ignition 3 | — | W27 | — | 0.5 | OEM-A-52 | — | — | — |
| A12 | Ignition 2 | — | W26 | — | 0.5 | OEM-A-60 | — | — | — |
| A13 | Ignition 1 | — | W25 | — | 0.5 | OEM-A-8 | — | — | — |
| A14 | ADIO 1 | — | W34 | — | 0.5 | OEM-A-17 | — | — | — |
| A15 | Analogue Temp 1 | — | W36 | — | 0.5 | OEM-A-14 | — | — | — |
| A16 | Analogue Temp 2 | — | W46 | — | 0.5 | OEM-A-15 | — | — | — |
| A17 | Analogue Volt 1 | — | W35 | — | 0.5 | OEM-A-40 | — | — | — |
| A18 | Aux 3 / H-Bridge 1 | — | — | — | — | — | — | — | — |
| A19 | Aux 7 / Digital Input 7 | — | W39 | — | 0.5 | OEM-A-9 | — | — | — |
| A2 | Injection 3 | — | W30 | — | 0.5 | OEM-A-26 | — | — | — |
| A20 | Aux 2 | — | W38 | — | 0.5 | OEM-A-6 | — | — | — |
| A21 | Aux 1 | — | W37 | — | 0.5 | OEM-A-49 | — | — | — |
| A22 | Analogue Volt 2 | — | W45 | — | 0.5 | OEM-A-20 | — | — | — |
| A23 | Digital Input 3 | — | W50 | — | 0.5 | OEM-A-39 | — | — | — |
| A24 | Sensor Ground | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| A25 | Ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| A26 | Aux 4 / H-Bridge 1 | — | — | — | — | — | — | — | — |
| A27 | Aux 10 / Digital Input 10 | — | W42 | — | 0.5 | OEM-A-5 | — | — | — |
| A28 | Aux 9 / Digital Input 9 | — | W41 | — | 0.5 | OEM-A-31 | — | — | — |
| A29 | Aux 8 / Digital Input 8 | — | W40 | — | 0.5 | OEM-A-27 | — | — | — |
| A3 | Injection 2 | — | W29 | — | 0.5 | OEM-A-3 | — | — | — |
| A30 | Digital Input 1 | — | W48 | — | 0.5 | OEM-A-65 | — | — | — |
| A31 | Digital Input 2 | — | W49 | — | 0.5 | OEM-A-37 | — | — | — |
| A32 | +5V Out | — | W21 | — | 0.5 | OEM-A-41 | — | — | — |
| A33 | Analogue Volt 3 | — | — | — | — | — | — | — | — |
| A34 | Ground | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| A4 | Injection 1 | — | W28 | — | 0.5 | OEM-A-24 | — | — | — |
| A5 | +14V | — | W6 | — | 0.85 | MAIN-R-OUT | — | — | — |
| A6 | Ignition Switch | — | W51 | — | 0.5 | NEW-KEYON-1 | — | — | — |
| A7 | Shield Ground | — | — | — | — | — | — | — | — |
| A8 | Trigger 1 | — | W22 | — | 0.5 | OEM-A-68 | — | — | — |
| A9 | Trigger 2 | — | W23 | — | 0.5 | OEM-A-44 | — | — | — |
G5VOODOONEO4-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| B1 | Injection 8 | — | — | — | — | — | — | — | — |
| B10 | Heat | — | — | — | — | — | — | — | — |
| B11 | MES | — | — | — | — | — | — | — | — |
| B12 | Ignition 6 | — | — | — | — | — | — | — | — |
| B13 | Ignition 5 | — | — | — | — | — | — | — | — |
| B14 | RE | — | — | — | — | — | — | — | — |
| B15 | ADIO 3 | — | — | — | — | — | — | — | — |
| B16 | ADIO 4 | — | — | — | — | — | — | — | — |
| B17 | Shield Ground | — | — | — | — | — | — | — | — |
| B18 | Aux 5 / H-Bridge 2 | — | — | — | — | — | — | — | — |
| B19 | Digital Input 6 | — | — | — | — | — | — | — | — |
| B2 | Injection 7 | — | — | — | — | — | — | — | — |
| B20 | Digital Input 5 / K-Line | — | — | — | — | — | — | — | — |
| B21 | Digital Input 4 | — | — | — | — | — | — | — | — |
| B22 | Sensor Ground | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| B23 | ADIO 5 | — | — | — | — | — | — | — | — |
| B24 | ADIO 6 | — | — | — | — | — | — | — | — |
| B25 | Ground | — | W14 | — | 0.85 | SP-GND-1 | — | — | — |
| B26 | Aux 6 / H-Bridge 2 | — | — | — | — | — | — | — | — |
| B27 | CAN 2 High | — | — | — | — | — | — | — | — |
| B28 | CAN 2 Low | — | — | — | — | — | — | — | — |
| B29 | Aux 12 | — | W44 | — | 0.5 | OEM-A-22 | — | — | — |
| B3 | Injection 6 | — | W33 | — | 0.5 | OEM-A-2 | — | — | — |
| B30 | Aux 11 | — | W43 | — | 0.5 | OEM-A-53 | — | — | — |
| B31 | IPE | — | — | — | — | — | — | — | — |
| B32 | APE | — | — | — | — | — | — | — | — |
| B33 | ADIO 2 | — | — | — | — | — | — | — | — |
| B34 | Ground | — | W15 | — | 0.85 | SP-GND-1 | — | — | — |
| B4 | Injection 5 | — | W32 | — | 0.5 | OEM-A-25 | — | — | — |
| B5 | +14V E-Throttle | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| B6 | Analogue Temp 3 | — | W47 | — | 0.5 | OEM-A-36 | — | — | — |
| B7 | Analogue Temp 4 | — | — | — | — | — | — | — | — |
| B8 | Knock 2 | — | — | — | — | — | — | — | — |
| B9 | Knock 1 | — | W24 | — | 0.5 | OEM-A-34 | — | — | — |
MAIN-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (ignition-switched +12V) | — | W3 | — | 0.5 | OEM-A-38 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W5 | — | 0.5 | SP-GND-1 | — | — | — |
| IN | Relay contact input (battery + via main fuse) | — | W4 | — | 0.85 | NEW-BATT-1 | — | — | — |
| OUT | Relay contact output (switched +12V bus) | — | W6 | — | 0.85 | G5VOODOONEO4-A-A5 | — | — | — |
NEW-BATT
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | MAIN-R-IN | — | — | — |
NEW-KEYON
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W51 | — | 0.5 | G5VOODOONEO4-A-A6 | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ground (E-1) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Ground (OBD1 EGR enable) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | Coolant temperature (CLT) | — | W36 | — | 0.5 | G5VOODOONEO4-A-A15 | — | — | — |
| 15 | EGR temperature sensor | — | W46 | — | 0.5 | G5VOODOONEO4-A-A16 | — | — | — |
| 16 | MAF ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 17 | MAF signal | — | W34 | — | 0.5 | G5VOODOONEO4-A-A14 | — | — | — |
| 2 | Injector 6 (cyl 6) | — | W33 | — | 0.5 | G5VOODOONEO4-B-B3 | — | — | — |
| 20 | O2 sensor 1 (primary) | — | W45 | — | 0.5 | G5VOODOONEO4-A-A22 | — | — | — |
| 21 | Diagnostic L-line | — | — | — | — | — | — | — | — |
| 22 | Tachometer output | — | W44 | — | 0.5 | G5VOODOONEO4-B-B29 | — | — | — |
| 23 | ECU main power (from engine-electronics relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 24 | Injector 1 (cyl 1) | — | W28 | — | 0.5 | G5VOODOONEO4-A-A4 | — | — | — |
| 25 | Injector 5 (cyl 5) | — | W32 | — | 0.5 | G5VOODOONEO4-B-B4 | — | — | — |
| 26 | Injector 3 (cyl 3) | — | W30 | — | 0.5 | G5VOODOONEO4-A-A2 | — | — | — |
| 27 | Idle air control valve | — | W40 | — | 0.5 | G5VOODOONEO4-A-A29 | — | — | — |
| 3 | Injector 2 (cyl 2) | — | W29 | — | 0.5 | G5VOODOONEO4-A-A3 | — | — | — |
| 31 | EVAP canister purge valve | — | W41 | — | 0.5 | G5VOODOONEO4-A-A28 | — | — | — |
| 33 | Sensor ground bus | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 34 | Knock sensor 1 | — | W24 | — | 0.5 | G5VOODOONEO4-B-B9 | — | — | — |
| 36 | Intake air temperature (IAT) | — | W47 | — | 0.5 | G5VOODOONEO4-B-B6 | — | — | — |
| 37 | A/C compressor switch | — | W49 | — | 0.5 | G5VOODOONEO4-A-A31 | — | — | — |
| 38 | Ignition switch (run/start) | — | W3 | — | 0.5 | MAIN-R-COIL+ | — | — | — |
| 39 | A/C switch (cabin) | — | W50 | — | 0.5 | G5VOODOONEO4-A-A23 | — | — | — |
| 4 | Injector 4 (cyl 4) | — | W31 | — | 0.5 | G5VOODOONEO4-A-A1 | — | — | — |
| 40 | Throttle position sensor 1 | — | W35 | — | 0.5 | G5VOODOONEO4-A-A17 | — | — | — |
| 41 | TPS power (+5V) | — | W21 | — | 0.5 | G5VOODOONEO4-A-A32 | — | — | — |
| 43 | Diagnostic K-line | — | — | — | — | — | — | — | — |
| 44 | Camshaft position sensor (G40) | — | W23 | — | 0.5 | G5VOODOONEO4-A-A9 | — | — | — |
| 49 | Secondary air injection relay control | — | W37 | — | 0.5 | G5VOODOONEO4-A-A21 | — | — | — |
| 5 | Check engine light (MIL) | — | W42 | — | 0.5 | G5VOODOONEO4-A-A27 | — | — | — |
| 51 | MFA fuel-consumption signal | — | — | — | — | — | — | — | — |
| 52 | Ignition coil 4 (coil pack pin 4) | — | W27 | — | 0.5 | G5VOODOONEO4-A-A11 | — | — | — |
| 53 | Idle air control valve (2nd) | — | W43 | — | 0.5 | G5VOODOONEO4-B-B30 | — | — | — |
| 54 | Battery constant (+12V) | — | — | — | — | — | — | — | — |
| 55 | Ground (E-3) | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 56 | Ground (E-4) | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 59 | Mass airflow sensor (5th terminal) | — | — | — | — | — | — | — | — |
| 6 | Fuel pump relay control | — | W38 | — | 0.5 | G5VOODOONEO4-A-A20 | — | — | — |
| 60 | Ignition coil 3 (coil pack pin 3) | — | W26 | — | 0.5 | G5VOODOONEO4-A-A12 | — | — | — |
| 65 | Vehicle speed sensor (VSS) | — | W48 | — | 0.5 | G5VOODOONEO4-A-A30 | — | — | — |
| 67 | Crank sensor return (VR-) | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 68 | Crank position sensor (G28, VR+) | — | W22 | — | 0.5 | G5VOODOONEO4-A-A8 | — | — | — |
| 7 | Ground (E-2) | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Ignition coil 2 (coil pack pin 2) | — | W25 | — | 0.5 | G5VOODOONEO4-A-A13 | — | — | — |
| 9 | Engine electronics relay control | — | W39 | — | 0.5 | G5VOODOONEO4-A-A19 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W16 | — | 0.5 | OEM-A-16 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-A-33 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-A-67 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | G5VOODOONEO4-A-A24 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | G5VOODOONEO4-B-B22 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-23 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | G5VOODOONEO4-B-B5 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.5 | MAIN-R-COIL- | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-1 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-A-10 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-A-55 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | OEM-A-56 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | OEM-A-7 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | G5VOODOONEO4-A-A25 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | G5VOODOONEO4-A-A34 | — | — | — |
| 1 | — | — | W14 | — | 0.85 | G5VOODOONEO4-B-B25 | — | — | — |
| 1 | — | — | W15 | — | 0.85 | G5VOODOONEO4-B-B34 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Ground (E-1) | ground | G5VOODOONEO4-A-A25 + G5VOODOONEO4-A-A34 + G5VOODOONEO4-B-B25 + G5VOODOONEO4-B-B34 + MAIN-R-COIL- | Ground + Ground + Ground + Ground + Relay coil negative (ECU low-side driver) | ground + load | single_source | |
| OEM-A-10 | Ground (OBD1 EGR enable) | ground | G5VOODOONEO4-A-A25 + G5VOODOONEO4-A-A34 + G5VOODOONEO4-B-B25 + G5VOODOONEO4-B-B34 + MAIN-R-COIL- | Ground + Ground + Ground + Ground + Relay coil negative (ECU low-side driver) | ground + load | single_source | |
| OEM-A-14 | Coolant temperature (CLT) | temp_in | G5VOODOONEO4-A-A15 | Analogue Temp 1 | temp_in | single_source | |
| OEM-A-15 | EGR temperature sensor | temp_in | G5VOODOONEO4-A-A16 | Analogue Temp 2 | temp_in | single_source | |
| OEM-A-16 | MAF ground | sensor_ground | G5VOODOONEO4-A-A24 + G5VOODOONEO4-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-A-17 | MAF signal | analog_in | G5VOODOONEO4-A-A14 | ADIO 1 | analog_in | single_source | |
| OEM-A-2 | Injector 6 (cyl 6) | injector_out | G5VOODOONEO4-B-B3 | Injection 6 | injector_out | single_source | |
| OEM-A-20 | O2 sensor 1 (primary) | lambda_nb_in | G5VOODOONEO4-A-A22 | Analogue Volt 2 | analog_in | single_source | |
| OEM-A-21 | Diagnostic L-line | serial | — | — | — | single_source | |
| OEM-A-22 | Tachometer output | tacho_out | G5VOODOONEO4-B-B29 | Aux 12 | low_side_out | single_source | |
| OEM-A-23 | ECU main power (from engine-electronics relay) | power_in | G5VOODOONEO4-B-B5 | +14V E-Throttle | power_in | single_source | |
| OEM-A-24 | Injector 1 (cyl 1) | injector_out | G5VOODOONEO4-A-A4 | Injection 1 | injector_out | single_source | |
| OEM-A-25 | Injector 5 (cyl 5) | injector_out | G5VOODOONEO4-B-B4 | Injection 5 | injector_out | single_source | |
| OEM-A-26 | Injector 3 (cyl 3) | injector_out | G5VOODOONEO4-A-A2 | Injection 3 | injector_out | single_source | |
| OEM-A-27 | Idle air control valve | low_side_out | G5VOODOONEO4-A-A29 | Aux 8 / Digital Input 8 | low_side_out | single_source | |
| OEM-A-3 | Injector 2 (cyl 2) | injector_out | G5VOODOONEO4-A-A3 | Injection 2 | injector_out | single_source | |
| OEM-A-31 | EVAP canister purge valve | low_side_out | G5VOODOONEO4-A-A28 | Aux 9 / Digital Input 9 | low_side_out | single_source | |
| OEM-A-33 | Sensor ground bus | sensor_ground | G5VOODOONEO4-A-A24 + G5VOODOONEO4-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-A-34 | Knock sensor 1 | knock_in | G5VOODOONEO4-B-B9 | Knock 1 | knock_in | single_source | |
| OEM-A-36 | Intake air temperature (IAT) | temp_in | G5VOODOONEO4-B-B6 | Analogue Temp 3 | temp_in | single_source | |
| OEM-A-37 | A/C compressor switch | digital_in | G5VOODOONEO4-A-A31 | Digital Input 2 | digital_in | single_source | |
| OEM-A-38 | Ignition switch (run/start) | digital_in | MAIN-R-COIL+ | Relay coil positive (ignition-switched +12V) | power_in | single_source | |
| OEM-A-39 | A/C switch (cabin) | digital_in | G5VOODOONEO4-A-A23 | Digital Input 3 | digital_in | single_source | |
| OEM-A-4 | Injector 4 (cyl 4) | injector_out | G5VOODOONEO4-A-A1 | Injection 4 | injector_out | single_source | |
| OEM-A-40 | Throttle position sensor 1 | analog_in | G5VOODOONEO4-A-A17 | Analogue Volt 1 | analog_in | single_source | |
| OEM-A-41 | TPS power (+5V) | vref | G5VOODOONEO4-A-A32 | +5V Out | vref | single_source | |
| OEM-A-43 | Diagnostic K-line | serial | — | — | — | single_source | |
| OEM-A-44 | Camshaft position sensor (G40) | trigger_in | G5VOODOONEO4-A-A9 | Trigger 2 | trigger_in | single_source | |
| OEM-A-49 | Secondary air injection relay control | low_side_out | G5VOODOONEO4-A-A21 | Aux 1 | low_side_out | single_source | |
| OEM-A-5 | Check engine light (MIL) | low_side_out | G5VOODOONEO4-A-A27 | Aux 10 / Digital Input 10 | low_side_out | single_source | |
| OEM-A-51 | MFA fuel-consumption signal | tacho_out | — | — | — | single_source | |
| OEM-A-52 | Ignition coil 4 (coil pack pin 4) | ignition_out | G5VOODOONEO4-A-A11 | Ignition 3 | ignition_out | single_source | |
| OEM-A-53 | Idle air control valve (2nd) | low_side_out | G5VOODOONEO4-B-B30 | Aux 11 | low_side_out | single_source | |
| OEM-A-54 | Battery constant (+12V) | power_in | — | — | — | single_source | |
| OEM-A-55 | Ground (E-3) | ground | G5VOODOONEO4-A-A25 + G5VOODOONEO4-A-A34 + G5VOODOONEO4-B-B25 + G5VOODOONEO4-B-B34 + MAIN-R-COIL- | Ground + Ground + Ground + Ground + Relay coil negative (ECU low-side driver) | ground + load | single_source | |
| OEM-A-56 | Ground (E-4) | ground | G5VOODOONEO4-A-A25 + G5VOODOONEO4-A-A34 + G5VOODOONEO4-B-B25 + G5VOODOONEO4-B-B34 + MAIN-R-COIL- | Ground + Ground + Ground + Ground + Relay coil negative (ECU low-side driver) | ground + load | single_source | |
| OEM-A-59 | Mass airflow sensor (5th terminal) | sensor_out | — | — | — | single_source | |
| OEM-A-6 | Fuel pump relay control | low_side_out | G5VOODOONEO4-A-A20 | Aux 2 | low_side_out | single_source | |
| OEM-A-60 | Ignition coil 3 (coil pack pin 3) | ignition_out | G5VOODOONEO4-A-A12 | Ignition 2 | ignition_out | single_source | |
| OEM-A-65 | Vehicle speed sensor (VSS) | digital_in | G5VOODOONEO4-A-A30 | Digital Input 1 | digital_in | single_source | |
| OEM-A-67 | Crank sensor return (VR-) | sensor_ground | G5VOODOONEO4-A-A24 + G5VOODOONEO4-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-A-68 | Crank position sensor (G28, VR+) | trigger_in | G5VOODOONEO4-A-A8 | Trigger 1 | trigger_in | single_source | |
| OEM-A-7 | Ground (E-2) | ground | G5VOODOONEO4-A-A25 + G5VOODOONEO4-A-A34 + G5VOODOONEO4-B-B25 + G5VOODOONEO4-B-B34 + MAIN-R-COIL- | Ground + Ground + Ground + Ground + Relay coil negative (ECU low-side driver) | ground + load | single_source | |
| OEM-A-8 | Ignition coil 2 (coil pack pin 2) | ignition_out | G5VOODOONEO4-A-A13 | Ignition 1 | ignition_out | single_source | |
| OEM-A-9 | Engine electronics relay control | low_side_out | G5VOODOONEO4-A-A19 | Aux 7 / Digital Input 7 | low_side_out | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-23 | SP-14V-1 | 0.85 | no route | ECU main power (from engine-electronics relay) | — | |
| W2 | SP-14V-1 | G5VOODOONEO4-B-B5 | 0.85 | no route | +14V E-Throttle | — | |
| W3 | OEM-A-38 | MAIN-R-COIL+ | 0.5 | no route | Ignition switch (run/start) | — | |
| W4 | NEW-BATT-1 | MAIN-R-IN | 0.85 | no route | Relay contact input (battery + via main fuse) | — | |
| W5 | MAIN-R-COIL- | SP-GND-1 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W6 | MAIN-R-OUT | G5VOODOONEO4-A-A5 | 0.85 | no route | Relay contact output (switched +12V bus) | — | |
| W7 | OEM-A-1 | SP-GND-1 | 0.85 | no route | Ground (E-1) | — | |
| W8 | OEM-A-10 | SP-GND-1 | 0.85 | no route | Ground (OBD1 EGR enable) | — | |
| W9 | OEM-A-55 | SP-GND-1 | 0.85 | no route | Ground (E-3) | — | |
| W10 | OEM-A-56 | SP-GND-1 | 0.85 | no route | Ground (E-4) | — | |
| W11 | OEM-A-7 | SP-GND-1 | 0.85 | no route | Ground (E-2) | — | |
| W12 | SP-GND-1 | G5VOODOONEO4-A-A25 | 0.85 | no route | Ground | — | |
| W13 | SP-GND-1 | G5VOODOONEO4-A-A34 | 0.85 | no route | Ground | — | |
| W14 | SP-GND-1 | G5VOODOONEO4-B-B25 | 0.85 | no route | Ground | — | |
| W15 | SP-GND-1 | G5VOODOONEO4-B-B34 | 0.85 | no route | Ground | — | |
| W16 | OEM-A-16 | SP-0V-1 | 0.5 | no route | MAF ground | — | |
| W17 | OEM-A-33 | SP-0V-1 | 0.5 | no route | Sensor ground bus | — | |
| W18 | OEM-A-67 | SP-0V-1 | 0.5 | no route | Crank sensor return (VR-) | — | |
| W19 | SP-0V-1 | G5VOODOONEO4-A-A24 | 0.5 | no route | Sensor Ground | — | |
| W20 | SP-0V-1 | G5VOODOONEO4-B-B22 | 0.5 | no route | Sensor Ground | — | |
| W21 | OEM-A-41 | G5VOODOONEO4-A-A32 | 0.5 | no route | TPS power (+5V) | — | |
| W22 | OEM-A-68 | G5VOODOONEO4-A-A8 | 0.5 | no route | Crank position sensor (G28, VR+) | — | |
| W23 | OEM-A-44 | G5VOODOONEO4-A-A9 | 0.5 | no route | Camshaft position sensor (G40) | — | |
| W24 | OEM-A-34 | G5VOODOONEO4-B-B9 | 0.5 | no route | Knock sensor 1 | — | |
| W25 | OEM-A-8 | G5VOODOONEO4-A-A13 | 0.5 | no route | Ignition coil 2 (coil pack pin 2) | — | |
| W26 | OEM-A-60 | G5VOODOONEO4-A-A12 | 0.5 | no route | Ignition coil 3 (coil pack pin 3) | — | |
| W27 | OEM-A-52 | G5VOODOONEO4-A-A11 | 0.5 | no route | Ignition coil 4 (coil pack pin 4) | — | |
| W28 | OEM-A-24 | G5VOODOONEO4-A-A4 | 0.5 | no route | Injector 1 (cyl 1) | — | |
| W29 | OEM-A-3 | G5VOODOONEO4-A-A3 | 0.5 | no route | Injector 2 (cyl 2) | — | |
| W30 | OEM-A-26 | G5VOODOONEO4-A-A2 | 0.5 | no route | Injector 3 (cyl 3) | — | |
| W31 | OEM-A-4 | G5VOODOONEO4-A-A1 | 0.5 | no route | Injector 4 (cyl 4) | — | |
| W32 | OEM-A-25 | G5VOODOONEO4-B-B4 | 0.5 | no route | Injector 5 (cyl 5) | — | |
| W33 | OEM-A-2 | G5VOODOONEO4-B-B3 | 0.5 | no route | Injector 6 (cyl 6) | — | |
| W34 | OEM-A-17 | G5VOODOONEO4-A-A14 | 0.5 | no route | MAF signal | — | |
| W35 | OEM-A-40 | G5VOODOONEO4-A-A17 | 0.5 | no route | Throttle position sensor 1 | — | |
| W36 | OEM-A-14 | G5VOODOONEO4-A-A15 | 0.5 | no route | Coolant temperature (CLT) | — | |
| W37 | OEM-A-49 | G5VOODOONEO4-A-A21 | 0.5 | no route | Secondary air injection relay control | — | |
| W38 | OEM-A-6 | G5VOODOONEO4-A-A20 | 0.5 | no route | Fuel pump relay control | — | |
| W39 | OEM-A-9 | G5VOODOONEO4-A-A19 | 0.5 | no route | Engine electronics relay control | — | |
| W40 | OEM-A-27 | G5VOODOONEO4-A-A29 | 0.5 | no route | Idle air control valve | — | |
| W41 | OEM-A-31 | G5VOODOONEO4-A-A28 | 0.5 | no route | EVAP canister purge valve | — | |
| W42 | OEM-A-5 | G5VOODOONEO4-A-A27 | 0.5 | no route | Check engine light (MIL) | — | |
| W43 | OEM-A-53 | G5VOODOONEO4-B-B30 | 0.5 | no route | Idle air control valve (2nd) | — | |
| W44 | OEM-A-22 | G5VOODOONEO4-B-B29 | 0.5 | no route | Tachometer output | — | |
| W45 | OEM-A-20 | G5VOODOONEO4-A-A22 | 0.5 | no route | O2 sensor 1 (primary) | — | |
| W46 | OEM-A-15 | G5VOODOONEO4-A-A16 | 0.5 | no route | EGR temperature sensor | — | |
| W47 | OEM-A-36 | G5VOODOONEO4-B-B6 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W48 | OEM-A-65 | G5VOODOONEO4-A-A30 | 0.5 | no route | Vehicle speed sensor (VSS) | — | |
| W49 | OEM-A-37 | G5VOODOONEO4-A-A31 | 0.5 | no route | A/C compressor switch | — | |
| W50 | OEM-A-39 | G5VOODOONEO4-A-A23 | 0.5 | no route | A/C switch (cabin) | — | |
| W51 | NEW-KEYON-1 | G5VOODOONEO4-A-A6 | 0.5 | no route | Ignition Switch | — |
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 (6)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | LOAD_UNKNOWN | G5VOODOONEO4-A-A19 | G5VOODOONEO4-A-A19 "Aux 7 / Digital Input 7" drives OEM-A-9 Engine electronics relay control (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G5VOODOONEO4-A-A20 | G5VOODOONEO4-A-A20 "Aux 2" drives OEM-A-6 Fuel pump relay control (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G5VOODOONEO4-A-A21 | G5VOODOONEO4-A-A21 "Aux 1" drives OEM-A-49 Secondary air injection relay control (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | OEM-A-22 ↔ G5VOODOONEO4-B-B29 | OEM-A-22 "Tachometer output" [tacho_out] is wired to G5VOODOONEO4-B-B29 "Aux 12" [low_side_out]. Tacho as a low-side output: check the tach needs a pull-up. |
| info | NET_FAMILY | OEM-A-38 ↔ MAIN-R-COIL+ | OEM-A-38 "Ignition switch (run/start)" [digital_in] is wired to MAIN-R-COIL+ "Relay coil positive (ignition-switched +12V)" [power_in]. Switched supply used as the ignition-on sense. |
| info | UNMAPPED | OEM | 4 optional OEM pins are not mapped: OEM-A-21 Diagnostic L-line; OEM-A-43 Diagnostic K-line; OEM-A-51 MFA fuel-consumption signal; OEM-A-59 Mass airflow sensor (5th terminal) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-A-54 | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-20. Review every wire against both manuals before building. Not wired: - OEM-A 54: Battery constant (+12V): Link G5 Voodoo Neo 4 has no battery-constant memory input; not needed - OEM-A 51: MFA fuel-consumption signal: no free tacho/frequency_out/low_side/ls_hs on Link G5 Voodoo Neo 4 - OEM-A 21: Diagnostic L-line: no free k_line on Link G5 Voodoo Neo 4 - OEM-A 43: Diagnostic K-line: no free k_line on Link G5 Voodoo Neo 4 - OEM-A 59: Mass airflow sensor (5th terminal): no rule for class sensor_signal; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Emtron SL4/SL6/SL8 pinout pages | https://docs.emtronaustralia.com.au/engine-management/wiring/index.html | archive | 2026-10-05 | e52b3da9996a |
| 4 | vendor_doc | Link G5 Voodoo Neo 4 Installer I/O Table | https://kb.linkecu.com/__attachments/a_1a3242fc2d568967ebf4193c319d8d7c0455f02d79a5d02336f74d7d307e93ce/G5%20Neo4%20Installer%20IO%20Table.pdf | — | — | — |
| 3 | forum | rusEFI Mazda Miata 2002 engine wiring | https://github.com/rusefi/rusefi/wiki/Mazda-Miata-2002 | archive | 2026-10-05 | cc3cae670408 |
| 2 | community_copy | a2resource: VR6/ABA Motronic M2.9 (OBD1) engine control unit pinout | http://www.a2resource.com/electrical/management/motronicvr6aba.html | — | — | — |