VW Golf/Jetta Mk2 1.8 8v Digifant II → Emtron Shadow 8 (auto)
VW Golf/Jetta Mk2 1.8 8v Digifant II — Emtron — Shadow 8
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-12
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 | 3: read the Findings page before cutting any wire |
| Size of the job | 28 wires · 7 connectors · 3 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 3-1447221-4 |
| 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 | SHADOW8-A-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | SHADOW8-B-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-A-13 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-19 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | SP-GND-1 | SHADOW8-A-34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | SHADOW8-A-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-A-5 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-A-6 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-0V-1 | SHADOW8-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-0V-1 | SHADOW8-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-A-17 | SHADOW8-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-A-18 | SHADOW8-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-A-4 | SHADOW8-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-A-25 | SHADOW8-B-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-A-12 | SHADOW8-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-A-7 | SP-SHD-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-SHD-1 | SHADOW8-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-A-3 | SHADOW8-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-A-21 | SHADOW8-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-10 | SHADOW8-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-22 | SHADOW8-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-23 | SHADOW8-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-2 | SHADOW8-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-9 | SHADOW8-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-1 | SHADOW8-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-11 | SHADOW8-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-16 | SHADOW8-A-28 | 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 | SHADOW8-A-1 | SHADOW8-A-4 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | SHADOW8-A-3 | SHADOW8-A-4 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 3 | SHADOW8-A-1 | SHADOW8-A-3 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 4 | SHADOW8-A-34 | SHADOW8-A-1 | open (OL) | power ground must not touch +12 V supply | |
| 5 | SHADOW8-A-34 | SHADOW8-A-3 | 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
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Starter signal (term 50) | — | W26 | — | 0.5 | SHADOW8-A-26 | — | — | — |
| 10 | Coolant temperature sensor | — | W21 | — | 0.5 | SHADOW8-A-11 | — | — | — |
| 11 | Idle/WOT throttle switch | — | W27 | — | 0.5 | SHADOW8-A-27 | — | — | — |
| 12 | Injector driver (batch, all 4) | — | W16 | — | 0.5 | SHADOW8-B-2 | — | — | — |
| 13 | Ground | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | ECU power (control-unit relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 16 | A/C compressor signal | — | W28 | — | 0.5 | SHADOW8-A-28 | — | — | — |
| 17 | AFM potentiometer supply | — | W12 | — | 0.5 | SHADOW8-A-3 | — | — | — |
| 18 | Hall sender signal (engine speed) | — | W13 | — | 0.5 | SHADOW8-A-6 | — | — | — |
| 19 | Ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Oxygen (lambda) sensor signal | — | W24 | — | 0.5 | SHADOW8-A-12 | — | — | — |
| 21 | AFM signal | — | W20 | — | 0.5 | SHADOW8-A-10 | — | — | — |
| 22 | Idle stabilizer valve coil 1 | — | W22 | — | 0.5 | SHADOW8-B-11 | — | — | — |
| 23 | Idle stabilizer valve coil 2 | — | W23 | — | 0.5 | SHADOW8-B-12 | — | — | — |
| 25 | Ignition timing signal to TCI | — | W15 | — | 0.5 | SHADOW8-B-27 | — | — | — |
| 3 | Fuel pump relay control | — | W19 | — | 0.5 | SHADOW8-B-10 | — | — | — |
| 4 | Knock sensor signal | — | W14 | — | 0.5 | SHADOW8-A-16 | — | — | — |
| 5 | Knock sensor return | — | W8 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sensor ground (CTS/Hall/AFM/throttle) | — | W9 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | Knock sensor shield | — | W17 | — | 0.5 | SP-SHD-1 | — | — | — |
| 8 | Hall sender supply (distributor) | — | — | — | — | — | — | — | — |
| 9 | Intake air temperature sensor | — | W25 | — | 0.5 | SHADOW8-A-13 | — | — | — |
SHADOW8-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU supply | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | 8.0V sensor supply | — | — | — | — | — | — | — | — |
| 3 | 5.0V sensor supply | — | W12 | — | 0.5 | OEM-A-17 | — | — | — |
| 4 | 0V analog reference | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Crank position sensor | — | — | — | — | — | — | — | — |
| 6 | Sync position sensor | — | W13 | — | 0.5 | OEM-A-18 | — | — | — |
| 7 | Trigger ground | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Shield | — | W18 | — | 0.5 | SP-SHD-1 | — | — | — |
| 9 | Ground 1 | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Analog voltage 1 | — | W20 | — | 0.5 | OEM-A-21 | — | — | — |
| 11 | Analog voltage 2 | — | W21 | — | 0.5 | OEM-A-10 | — | — | — |
| 12 | Analog voltage 3 | — | W24 | — | 0.5 | OEM-A-2 | — | — | — |
| 13 | Analog voltage 4 | — | W25 | — | 0.5 | OEM-A-9 | — | — | — |
| 14 | Analog voltage 5 | — | — | — | — | — | — | — | — |
| 15 | CAN bus 1 high | — | — | — | — | — | — | — | — |
| 16 | Knock 1 + | — | W14 | — | 0.5 | OEM-A-4 | — | — | — |
| 17 | Knock 1 − | — | — | — | — | — | — | — | — |
| 18 | Analog voltage 6 | — | — | — | — | — | — | — | — |
| 19 | Analog voltage 7 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 20 | Analog voltage 8 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 21 | Analog voltage 9 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 22 | Analog voltage 10 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 23 | CAN bus 1 low | — | — | — | — | — | — | — | — |
| 24 | Knock 2 + | — | — | — | — | — | — | — | — |
| 25 | Knock 2 − | — | — | — | — | — | — | — | — |
| 26 | Digital input 1 | — | W26 | — | 0.5 | OEM-A-1 | — | — | — |
| 27 | Digital input 2 | — | W27 | — | 0.5 | OEM-A-11 | — | — | — |
| 28 | Digital input 3 | — | W28 | — | 0.5 | OEM-A-16 | — | — | — |
| 29 | Digital input 4 | — | — | — | — | — | — | — | — |
| 30 | Digital input 5 | — | — | — | — | — | — | — | — |
| 31 | Digital input 6 | — | — | — | — | — | — | — | — |
| 32 | CAN bus 2 high | — | — | — | — | — | — | — | — |
| 33 | CAN bus 2 low | — | — | — | — | — | — | — | — |
| 34 | Ground 2 | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
SHADOW8-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Battery constant (HOT) supply | — | — | — | — | — | — | — | — |
| 2 | Injector cylinder 1 | — | W16 | — | 0.5 | OEM-A-12 | — | — | — |
| 3 | Injector cylinder 2 | — | — | — | — | — | — | — | — |
| 4 | Injector cylinder 3 | — | — | — | — | — | — | — | — |
| 5 | Injector cylinder 4 | — | — | — | — | — | — | — | — |
| 6 | Injector cylinder 5 | — | — | — | — | — | — | — | — |
| 7 | Injector cylinder 6 | — | — | — | — | — | — | — | — |
| 8 | Injector cylinder 7 | — | — | — | — | — | — | — | — |
| 9 | Injector cylinder 8 | — | — | — | — | — | — | — | — |
| 10 | Aux output 1 | — | W19 | — | 0.5 | OEM-A-3 | — | — | — |
| 11 | Aux output 2 | — | W22 | — | 0.5 | OEM-A-22 | — | — | — |
| 12 | Aux output 3 | — | W23 | — | 0.5 | OEM-A-23 | — | — | — |
| 13 | Aux output 4 | — | — | — | — | — | — | — | — |
| 14 | Aux output 5 | — | — | — | — | — | — | — | — |
| 15 | Aux output 6 | — | — | — | — | — | — | — | — |
| 16 | Aux output 7 | — | — | — | — | — | — | — | — |
| 17 | Aux output 8 | — | — | — | — | — | — | — | — |
| 18 | Digital input 7 | — | — | — | — | — | — | — | — |
| 19 | Digital input 8 | — | — | — | — | — | — | — | — |
| 20 | Digital input 9 | — | — | — | — | — | — | — | — |
| 21 | Digital input 10 / ignition switch | — | — | — | — | — | — | — | — |
| 22 | Aux output 9 | — | — | — | — | — | — | — | — |
| 23 | Aux output 10 | — | — | — | — | — | — | — | — |
| 24 | Aux output 11 | — | — | — | — | — | — | — | — |
| 25 | Aux output 12 | — | — | — | — | — | — | — | — |
| 26 | Aux 9–12 power supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | Ignition TTL cylinder 1 | — | W15 | — | 0.5 | OEM-A-25 | — | — | — |
| 28 | Ignition TTL cylinder 2 | — | — | — | — | — | — | — | — |
| 29 | Ignition TTL cylinder 3 | — | — | — | — | — | — | — | — |
| 30 | Ignition TTL cylinder 4 | — | — | — | — | — | — | — | — |
| 31 | Ignition TTL cylinder 5 | — | — | — | — | — | — | — | — |
| 32 | Ignition TTL cylinder 6 | — | — | — | — | — | — | — | — |
| 33 | Ignition TTL cylinder 7 | — | — | — | — | — | — | — | — |
| 34 | Ignition TTL cylinder 8 | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | SHADOW8-A-7 | — | — | — |
| 1 | — | — | W8 | — | 0.5 | OEM-A-5 | — | — | — |
| 1 | — | — | W9 | — | 0.5 | OEM-A-6 | — | — | — |
| 1 | — | — | W10 | — | 0.5 | SHADOW8-A-4 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-14 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | SHADOW8-A-1 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | SHADOW8-B-26 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-A-13 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-A-19 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | SHADOW8-A-34 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | SHADOW8-A-9 | — | — | — |
SP-SHD
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W17 | — | 0.5 | OEM-A-7 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | SHADOW8-A-8 | — | — | — |
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 | SHADOW8-A-26 | Digital input 1 | digital_in | corroborated | |
| OEM-A-10 | Coolant temperature sensor | temp_in | SHADOW8-A-11 | Analog voltage 2 | analog_in | corroborated | |
| OEM-A-11 | Idle/WOT throttle switch | digital_in | SHADOW8-A-27 | Digital input 2 | digital_in | corroborated | |
| OEM-A-12 | Injector driver (batch, all 4) | injector_out | SHADOW8-B-2 | Injector cylinder 1 | injector_out | corroborated | |
| OEM-A-13 | Ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | corroborated | |
| OEM-A-14 | ECU power (control-unit relay) | power_in | SHADOW8-A-1 + SHADOW8-B-26 | ECU supply + Aux 9–12 power supply | power_in | corroborated | |
| OEM-A-16 | A/C compressor signal | digital_in | SHADOW8-A-28 | Digital input 3 | digital_in | corroborated | |
| OEM-A-17 | AFM potentiometer supply | vref | SHADOW8-A-3 | 5.0V sensor supply | vref | corroborated | |
| OEM-A-18 | Hall sender signal (engine speed) | trigger_in | SHADOW8-A-6 | Sync position sensor | trigger_in | corroborated | |
| OEM-A-19 | Ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | corroborated | |
| OEM-A-2 | Oxygen (lambda) sensor signal | lambda_nb_in | SHADOW8-A-12 | Analog voltage 3 | analog_in | corroborated | |
| OEM-A-21 | AFM signal | analog_in | SHADOW8-A-10 | Analog voltage 1 | analog_in | corroborated | |
| OEM-A-22 | Idle stabilizer valve coil 1 | low_side_out | SHADOW8-B-11 | Aux output 2 | low_side_out | corroborated | |
| OEM-A-23 | Idle stabilizer valve coil 2 | low_side_out | SHADOW8-B-12 | Aux output 3 | low_side_out | corroborated | |
| OEM-A-25 | Ignition timing signal to TCI | ignition_out | SHADOW8-B-27 | Ignition TTL cylinder 1 | ignition_out | corroborated | |
| OEM-A-3 | Fuel pump relay control | low_side_out | SHADOW8-B-10 | Aux output 1 | low_side_out | corroborated | |
| OEM-A-4 | Knock sensor signal | knock_in | SHADOW8-A-16 | Knock 1 + | knock_in | corroborated | |
| OEM-A-5 | Knock sensor return | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | corroborated | |
| OEM-A-6 | Sensor ground (CTS/Hall/AFM/throttle) | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | corroborated | |
| OEM-A-7 | Knock sensor shield | shield | SHADOW8-A-8 | Shield | shield | corroborated | |
| OEM-A-8 | Hall sender supply (distributor) | power_in | — | — | — | corroborated | |
| OEM-A-9 | Intake air temperature sensor | temp_in | SHADOW8-A-13 | Analog voltage 4 | analog_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 | SHADOW8-A-1 | 0.85 | no route | ECU supply | — | |
| W3 | SP-14V-1 | SHADOW8-B-26 | 0.85 | no route | Aux 9–12 power supply | — | |
| W4 | OEM-A-13 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W5 | OEM-A-19 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W6 | SP-GND-1 | SHADOW8-A-34 | 0.85 | no route | Ground 2 | — | |
| W7 | SP-GND-1 | SHADOW8-A-9 | 0.85 | no route | Ground 1 | — | |
| W8 | OEM-A-5 | SP-0V-1 | 0.5 | no route | Knock sensor return | — | |
| W9 | OEM-A-6 | SP-0V-1 | 0.5 | no route | Sensor ground (CTS/Hall/AFM/throttle) | — | |
| W10 | SP-0V-1 | SHADOW8-A-4 | 0.5 | no route | 0V analog reference | — | |
| W11 | SP-0V-1 | SHADOW8-A-7 | 0.5 | no route | Trigger ground | — | |
| W12 | OEM-A-17 | SHADOW8-A-3 | 0.5 | no route | AFM potentiometer supply | — | |
| W13 | OEM-A-18 | SHADOW8-A-6 | 0.5 | no route | Hall sender signal (engine speed) | — | |
| W14 | OEM-A-4 | SHADOW8-A-16 | 0.5 | no route | Knock sensor signal | — | |
| W15 | OEM-A-25 | SHADOW8-B-27 | 0.5 | no route | Ignition timing signal to TCI | — | |
| W16 | OEM-A-12 | SHADOW8-B-2 | 0.5 | no route | Injector driver (batch, all 4) | — | |
| W17 | OEM-A-7 | SP-SHD-1 | 0.5 | no route | Knock sensor shield | — | |
| W18 | SP-SHD-1 | SHADOW8-A-8 | 0.5 | no route | Shield | — | |
| W19 | OEM-A-3 | SHADOW8-B-10 | 0.5 | no route | Fuel pump relay control | — | |
| W20 | OEM-A-21 | SHADOW8-A-10 | 0.5 | no route | AFM signal | — | |
| W21 | OEM-A-10 | SHADOW8-A-11 | 0.5 | no route | Coolant temperature sensor | — | |
| W22 | OEM-A-22 | SHADOW8-B-11 | 0.5 | no route | Idle stabilizer valve coil 1 | — | |
| W23 | OEM-A-23 | SHADOW8-B-12 | 0.5 | no route | Idle stabilizer valve coil 2 | — | |
| W24 | OEM-A-2 | SHADOW8-A-12 | 0.5 | no route | Oxygen (lambda) sensor signal | — | |
| W25 | OEM-A-9 | SHADOW8-A-13 | 0.5 | no route | Intake air temperature sensor | — | |
| W26 | OEM-A-1 | SHADOW8-A-26 | 0.5 | no route | Starter signal (term 50) | — | |
| W27 | OEM-A-11 | SHADOW8-A-27 | 0.5 | no route | Idle/WOT throttle switch | — | |
| W28 | OEM-A-16 | SHADOW8-A-28 | 0.5 | no route | A/C compressor signal | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 1.000 | ea |
| connector | 4-1437290-1 | TE | Superseal 1.0 34-way plug, Key 2 | 1.000 | ea |
| terminal | 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 22.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (5)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | PHYS_REQUIRED_OPEN | SHADOW8-B-1 | SHADOW8-B-1 "Battery constant (HOT) supply" is required but not wired. |
| error | PHYS_REQUIRED_OPEN | SHADOW8-B-21 | SHADOW8-B-21 "Digital input 10 / ignition switch" is required but not wired. |
| 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-10 ↔ SHADOW8-A-11 | OEM-A-10 "Coolant temperature sensor" [temp_in] is wired to SHADOW8-A-11 "Analog voltage 2" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-A-9 ↔ SHADOW8-A-13 | OEM-A-9 "Intake air temperature sensor" [temp_in] is wired to SHADOW8-A-13 "Analog voltage 4" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Fit check: unconfirmed. Confirm these before building: - Trigger pattern for VW Digifant not found in the ECU's docs (No VW/Audi decoder anywhere in the mode list.) 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 - SHADOW8-B 1: Battery constant (HOT) supply: required by Emtron Shadow 8 but no stock pin feeds it; wire by hand - SHADOW8-B 21: Digital input 10 / ignition switch: required by Emtron Shadow 8 but no stock pin feeds it; wire by hand Not wired: - SHADOW8-A 17: Knock 1 − left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Emtron Shadow 8 ECU datasheet | https://docs.emtronaustralia.com.au/engine-management/datasheets/shadow-8-datasheet/index.html | archive | 2026-10-05 | f004c9a8d60c |
| 4 | vendor_doc | Emtron Shadow 8 pinout | https://docs.emtronaustralia.com.au/engine-management/wiring/shadow-8/shadow-8-pinout/index.html | archive | 2026-10-05 | f510053951c7 |
| 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 | — | — | — |