BMW 3 Series E36 1990–2000 (M50/M52) → Emtron Shadow 8 (auto)
BMW 3 Series E36 1990–2000 (M50/M52) — Emtron — Shadow 8
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-08
Before you start
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 51 wires · 7 connectors · 4 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-X-54 | 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-X-26 | SHADOW8-B-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-X-15 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-X-34 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-X-55 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-X-6 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | SHADOW8-A-34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | SHADOW8-A-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-X-28 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-X-40 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-X-43 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-X-44 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-X-71 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | SHADOW8-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | SHADOW8-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-X-59 | SHADOW8-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-X-16 | SHADOW8-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-X-17 | SHADOW8-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-X-70 | SHADOW8-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-X-69 | SHADOW8-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-X-50 | SHADOW8-B-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-X-51 | SHADOW8-B-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-X-52 | SHADOW8-B-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-X-23 | SHADOW8-B-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-X-25 | SHADOW8-B-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-X-24 | SHADOW8-B-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-X-33 | SHADOW8-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-X-32 | SHADOW8-B-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-X-31 | SHADOW8-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-X-5 | SHADOW8-B-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-X-3 | SHADOW8-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-X-4 | SHADOW8-B-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-X-45 | SP-SHD-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | SP-SHD-1 | SHADOW8-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-X-56 | SHADOW8-B-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-X-1 | SHADOW8-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-X-27 | SHADOW8-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-X-38 | SHADOW8-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-X-2 | SHADOW8-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-X-29 | SHADOW8-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-X-36 | SHADOW8-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-X-7 | SHADOW8-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-X-8 | SHADOW8-B-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-X-41 | SHADOW8-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-X-73 | SHADOW8-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-X-13 | SHADOW8-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-X-78 | SHADOW8-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-X-77 | SHADOW8-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-X-42 | SHADOW8-A-26 | 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-B-1 | SHADOW8-A-4 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | SHADOW8-A-1 | SHADOW8-A-3 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 3 | SHADOW8-A-34 | SHADOW8-A-1 | open (OL) | power ground must not touch +12 V supply | |
| 4 | SHADOW8-A-34 | SHADOW8-A-3 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | SHADOW8-A-34 | SHADOW8-B-1 | open (OL) | power ground must not touch +12 V supply | |
| 6 | SHADOW8-A-4 | SHADOW8-A-1 | open (OL) | sensor ground must not touch +12 V supply | |
| 7 | SHADOW8-A-4 | SHADOW8-A-3 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 8 | SHADOW8-B-1 | SHADOW8-A-3 | open (OL) | +12 V supply must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
OEM-X
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Fuel pump relay control | — | W38 | — | 0.5 | SHADOW8-B-10 | — | — | — |
| 13 | O2 sensor signal | — | W48 | — | 0.5 | SHADOW8-A-12 | — | — | — |
| 15 | Ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 16 | Crank position sensor (+) | — | W19 | — | 0.5 | SHADOW8-A-5 | — | — | — |
| 17 | Camshaft position sensor (Hall) | — | W20 | — | 0.5 | SHADOW8-A-6 | — | — | — |
| 2 | Idle speed control valve (close winding) | — | W41 | — | 0.5 | SHADOW8-B-13 | — | — | — |
| 23 | Ignition coil cylinder 4 | — | W26 | — | 0.5 | SHADOW8-B-30 | — | — | — |
| 24 | Ignition coil cylinder 6 | — | W28 | — | 0.5 | SHADOW8-B-32 | — | — | — |
| 25 | Ignition coil cylinder 5 | — | W27 | — | 0.5 | SHADOW8-B-31 | — | — | — |
| 26 | Battery voltage (constant +12V) | — | W4 | — | 0.85 | SHADOW8-B-1 | — | — | — |
| 27 | Main relay control | — | W39 | — | 0.5 | SHADOW8-B-11 | — | — | — |
| 28 | Ground (electronics + sensor shielding) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 29 | Idle speed control valve (open winding) | — | W42 | — | 0.5 | SHADOW8-B-14 | — | — | — |
| 3 | Injector cylinder 5 | — | W33 | — | 0.5 | SHADOW8-B-6 | — | — | — |
| 31 | Injector cylinder 3 | — | W31 | — | 0.5 | SHADOW8-B-4 | — | — | — |
| 32 | Injector cylinder 2 | — | W30 | — | 0.5 | SHADOW8-B-3 | — | — | — |
| 33 | Injector cylinder 1 | — | W29 | — | 0.5 | SHADOW8-B-2 | — | — | — |
| 34 | Ground (output stages) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 36 | Evap purge solenoid | — | W43 | — | 0.5 | SHADOW8-B-15 | — | — | — |
| 38 | O2 sensor heater relay control | — | W40 | — | 0.5 | SHADOW8-B-12 | — | — | — |
| 4 | Injector cylinder 6 | — | W34 | — | 0.5 | SHADOW8-B-7 | — | — | — |
| 40 | O2 sensor signal ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 41 | Mass air flow (MAF) signal | — | W46 | — | 0.5 | SHADOW8-A-10 | — | — | — |
| 42 | Vehicle speed signal | — | W51 | — | 0.5 | SHADOW8-A-26 | — | — | — |
| 43 | Crank position sensor (-) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 44 | Sensor ground (IAT/ECT/TPS) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 45 | Shield ground | — | W35 | — | 0.5 | SP-SHD-1 | — | — | — |
| 47 | Tachometer output | — | — | — | — | — | — | — | — |
| 5 | Injector cylinder 4 | — | W32 | — | 0.5 | SHADOW8-B-5 | — | — | — |
| 50 | Ignition coil cylinder 1 | — | W23 | — | 0.5 | SHADOW8-B-27 | — | — | — |
| 51 | Ignition coil cylinder 2 | — | W24 | — | 0.5 | SHADOW8-B-28 | — | — | — |
| 52 | Ignition coil cylinder 3 | — | W25 | — | 0.5 | SHADOW8-B-29 | — | — | — |
| 54 | ECU power (+14V from main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 55 | Ground (ignition) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 56 | Ignition switch (terminal 15) | — | W37 | — | 0.5 | SHADOW8-B-21 | — | — | — |
| 59 | +5V sensor supply | — | W18 | — | 0.5 | SHADOW8-A-3 | — | — | — |
| 6 | Ground (injector output stages) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 69 | Knock sensor cylinders 4-6 | — | W22 | — | 0.5 | SHADOW8-A-24 | — | — | — |
| 7 | VANOS intake camshaft solenoid | — | W44 | — | 0.5 | SHADOW8-B-16 | — | — | — |
| 70 | Knock sensor cylinders 1-3 | — | W21 | — | 0.5 | SHADOW8-A-16 | — | — | — |
| 71 | Knock sensor ground/shield | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 73 | Throttle position (TPS) | — | W47 | — | 0.5 | SHADOW8-A-11 | — | — | — |
| 77 | Intake air temperature (IAT) | — | W50 | — | 0.5 | SHADOW8-A-14 | — | — | — |
| 78 | Engine coolant temperature (ECT) | — | W49 | — | 0.5 | SHADOW8-A-13 | — | — | — |
| 8 | Check engine light (MIL) | — | W45 | — | 0.5 | SHADOW8-B-17 | — | — | — |
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 | — | W18 | — | 0.5 | OEM-X-59 | — | — | — |
| 4 | 0V analog reference | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Crank position sensor | — | W19 | — | 0.5 | OEM-X-16 | — | — | — |
| 6 | Sync position sensor | — | W20 | — | 0.5 | OEM-X-17 | — | — | — |
| 7 | Trigger ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Shield | — | W36 | — | 0.5 | SP-SHD-1 | — | — | — |
| 9 | Ground 1 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Analog voltage 1 | — | W46 | — | 0.5 | OEM-X-41 | — | — | — |
| 11 | Analog voltage 2 | — | W47 | — | 0.5 | OEM-X-73 | — | — | — |
| 12 | Analog voltage 3 | — | W48 | — | 0.5 | OEM-X-13 | — | — | — |
| 13 | Analog voltage 4 | — | W49 | — | 0.5 | OEM-X-78 | — | — | — |
| 14 | Analog voltage 5 | — | W50 | — | 0.5 | OEM-X-77 | — | — | — |
| 15 | CAN bus 1 high | — | — | — | — | — | — | — | — |
| 16 | Knock 1 + | — | W21 | — | 0.5 | OEM-X-70 | — | — | — |
| 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 + | — | W22 | — | 0.5 | OEM-X-69 | — | — | — |
| 25 | Knock 2 − | — | — | — | — | — | — | — | — |
| 26 | Digital input 1 | — | W51 | — | 0.5 | OEM-X-42 | — | — | — |
| 27 | Digital input 2 | — | — | — | — | — | — | — | — |
| 28 | Digital input 3 | — | — | — | — | — | — | — | — |
| 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 | — | W9 | — | 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 | — | W4 | — | 0.85 | OEM-X-26 | — | — | — |
| 2 | Injector cylinder 1 | — | W29 | — | 0.5 | OEM-X-33 | — | — | — |
| 3 | Injector cylinder 2 | — | W30 | — | 0.5 | OEM-X-32 | — | — | — |
| 4 | Injector cylinder 3 | — | W31 | — | 0.5 | OEM-X-31 | — | — | — |
| 5 | Injector cylinder 4 | — | W32 | — | 0.5 | OEM-X-5 | — | — | — |
| 6 | Injector cylinder 5 | — | W33 | — | 0.5 | OEM-X-3 | — | — | — |
| 7 | Injector cylinder 6 | — | W34 | — | 0.5 | OEM-X-4 | — | — | — |
| 8 | Injector cylinder 7 | — | — | — | — | — | — | — | — |
| 9 | Injector cylinder 8 | — | — | — | — | — | — | — | — |
| 10 | Aux output 1 | — | W38 | — | 0.5 | OEM-X-1 | — | — | — |
| 11 | Aux output 2 | — | W39 | — | 0.5 | OEM-X-27 | — | — | — |
| 12 | Aux output 3 | — | W40 | — | 0.5 | OEM-X-38 | — | — | — |
| 13 | Aux output 4 | — | W41 | — | 0.5 | OEM-X-2 | — | — | — |
| 14 | Aux output 5 | — | W42 | — | 0.5 | OEM-X-29 | — | — | — |
| 15 | Aux output 6 | — | W43 | — | 0.5 | OEM-X-36 | — | — | — |
| 16 | Aux output 7 | — | W44 | — | 0.5 | OEM-X-7 | — | — | — |
| 17 | Aux output 8 | — | W45 | — | 0.5 | OEM-X-8 | — | — | — |
| 18 | Digital input 7 | — | — | — | — | — | — | — | — |
| 19 | Digital input 8 | — | — | — | — | — | — | — | — |
| 20 | Digital input 9 | — | — | — | — | — | — | — | — |
| 21 | Digital input 10 / ignition switch | — | W37 | — | 0.5 | OEM-X-56 | — | — | — |
| 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 | — | W23 | — | 0.5 | OEM-X-50 | — | — | — |
| 28 | Ignition TTL cylinder 2 | — | W24 | — | 0.5 | OEM-X-51 | — | — | — |
| 29 | Ignition TTL cylinder 3 | — | W25 | — | 0.5 | OEM-X-52 | — | — | — |
| 30 | Ignition TTL cylinder 4 | — | W26 | — | 0.5 | OEM-X-23 | — | — | — |
| 31 | Ignition TTL cylinder 5 | — | W27 | — | 0.5 | OEM-X-25 | — | — | — |
| 32 | Ignition TTL cylinder 6 | — | W28 | — | 0.5 | OEM-X-24 | — | — | — |
| 33 | Ignition TTL cylinder 7 | — | — | — | — | — | — | — | — |
| 34 | Ignition TTL cylinder 8 | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W15 | — | 0.5 | OEM-X-71 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-X-28 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-X-40 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-X-43 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-X-44 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | SHADOW8-A-4 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | SHADOW8-A-7 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-X-54 | — | — | — |
| 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 | — | — | W5 | — | 0.85 | OEM-X-15 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-X-34 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-X-55 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-X-6 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | SHADOW8-A-34 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | SHADOW8-A-9 | — | — | — |
SP-SHD
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W35 | — | 0.5 | OEM-X-45 | — | — | — |
| 1 | — | — | W36 | — | 0.5 | SHADOW8-A-8 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-X-1 | Fuel pump relay control | low_side_out | SHADOW8-B-10 | Aux output 1 | low_side_out | corroborated | |
| OEM-X-13 | O2 sensor signal | lambda_nb_in | SHADOW8-A-12 | Analog voltage 3 | analog_in | corroborated | |
| OEM-X-15 | Ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | corroborated | |
| OEM-X-16 | Crank position sensor (+) | trigger_in | SHADOW8-A-5 | Crank position sensor | trigger_in | corroborated | |
| OEM-X-17 | Camshaft position sensor (Hall) | trigger_in | SHADOW8-A-6 | Sync position sensor | trigger_in | corroborated | |
| OEM-X-2 | Idle speed control valve (close winding) | low_side_out | SHADOW8-B-13 | Aux output 4 | low_side_out | corroborated | |
| OEM-X-23 | Ignition coil cylinder 4 | ignition_out | SHADOW8-B-30 | Ignition TTL cylinder 4 | ignition_out | corroborated | |
| OEM-X-24 | Ignition coil cylinder 6 | ignition_out | SHADOW8-B-32 | Ignition TTL cylinder 6 | ignition_out | corroborated | |
| OEM-X-25 | Ignition coil cylinder 5 | ignition_out | SHADOW8-B-31 | Ignition TTL cylinder 5 | ignition_out | corroborated | |
| OEM-X-26 | Battery voltage (constant +12V) | power_in | SHADOW8-B-1 | Battery constant (HOT) supply | power_in | corroborated | |
| OEM-X-27 | Main relay control | low_side_out | SHADOW8-B-11 | Aux output 2 | low_side_out | corroborated | |
| OEM-X-28 | Ground (electronics + sensor shielding) | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | corroborated | |
| OEM-X-29 | Idle speed control valve (open winding) | low_side_out | SHADOW8-B-14 | Aux output 5 | switch_out | corroborated | |
| OEM-X-3 | Injector cylinder 5 | injector_out | SHADOW8-B-6 | Injector cylinder 5 | injector_out | corroborated | |
| OEM-X-31 | Injector cylinder 3 | injector_out | SHADOW8-B-4 | Injector cylinder 3 | injector_out | corroborated | |
| OEM-X-32 | Injector cylinder 2 | injector_out | SHADOW8-B-3 | Injector cylinder 2 | injector_out | corroborated | |
| OEM-X-33 | Injector cylinder 1 | injector_out | SHADOW8-B-2 | Injector cylinder 1 | injector_out | corroborated | |
| OEM-X-34 | Ground (output stages) | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | corroborated | |
| OEM-X-36 | Evap purge solenoid | low_side_out | SHADOW8-B-15 | Aux output 6 | switch_out | corroborated | |
| OEM-X-38 | O2 sensor heater relay control | low_side_out | SHADOW8-B-12 | Aux output 3 | low_side_out | corroborated | |
| OEM-X-4 | Injector cylinder 6 | injector_out | SHADOW8-B-7 | Injector cylinder 6 | injector_out | corroborated | |
| OEM-X-40 | O2 sensor signal ground | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | corroborated | |
| OEM-X-41 | Mass air flow (MAF) signal | analog_in | SHADOW8-A-10 | Analog voltage 1 | analog_in | corroborated | |
| OEM-X-42 | Vehicle speed signal | digital_in | SHADOW8-A-26 | Digital input 1 | digital_in | corroborated | |
| OEM-X-43 | Crank position sensor (-) | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | corroborated | |
| OEM-X-44 | Sensor ground (IAT/ECT/TPS) | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | corroborated | |
| OEM-X-45 | Shield ground | shield | SHADOW8-A-8 | Shield | shield | corroborated | |
| OEM-X-47 | Tachometer output | tacho_out | — | — | — | corroborated | |
| OEM-X-5 | Injector cylinder 4 | injector_out | SHADOW8-B-5 | Injector cylinder 4 | injector_out | corroborated | |
| OEM-X-50 | Ignition coil cylinder 1 | ignition_out | SHADOW8-B-27 | Ignition TTL cylinder 1 | ignition_out | corroborated | |
| OEM-X-51 | Ignition coil cylinder 2 | ignition_out | SHADOW8-B-28 | Ignition TTL cylinder 2 | ignition_out | corroborated | |
| OEM-X-52 | Ignition coil cylinder 3 | ignition_out | SHADOW8-B-29 | Ignition TTL cylinder 3 | ignition_out | corroborated | |
| OEM-X-54 | ECU power (+14V from main relay) | power_in | SHADOW8-A-1 + SHADOW8-B-26 | ECU supply + Aux 9–12 power supply | power_in | corroborated | |
| OEM-X-55 | Ground (ignition) | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | corroborated | |
| OEM-X-56 | Ignition switch (terminal 15) | digital_in | SHADOW8-B-21 | Digital input 10 / ignition switch | digital_in | corroborated | |
| OEM-X-59 | +5V sensor supply | vref | SHADOW8-A-3 | 5.0V sensor supply | vref | corroborated | |
| OEM-X-6 | Ground (injector output stages) | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | corroborated | |
| OEM-X-69 | Knock sensor cylinders 4-6 | knock_in | SHADOW8-A-24 | Knock 2 + | knock_in | corroborated | |
| OEM-X-7 | VANOS intake camshaft solenoid | low_side_out | SHADOW8-B-16 | Aux output 7 | switch_out | corroborated | |
| OEM-X-70 | Knock sensor cylinders 1-3 | knock_in | SHADOW8-A-16 | Knock 1 + | knock_in | corroborated | |
| OEM-X-71 | Knock sensor ground/shield | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | corroborated | |
| OEM-X-73 | Throttle position (TPS) | analog_in | SHADOW8-A-11 | Analog voltage 2 | analog_in | corroborated | |
| OEM-X-77 | Intake air temperature (IAT) | temp_in | SHADOW8-A-14 | Analog voltage 5 | analog_in | corroborated | |
| OEM-X-78 | Engine coolant temperature (ECT) | temp_in | SHADOW8-A-13 | Analog voltage 4 | analog_in | corroborated | |
| OEM-X-8 | Check engine light (MIL) | low_side_out | SHADOW8-B-17 | Aux output 8 | switch_out | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-X-54 | SP-14V-1 | 0.85 | no route | ECU power (+14V from main 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-X-26 | SHADOW8-B-1 | 0.85 | no route | Battery voltage (constant +12V) | — | |
| W5 | OEM-X-15 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W6 | OEM-X-34 | SP-GND-1 | 0.85 | no route | Ground (output stages) | — | |
| W7 | OEM-X-55 | SP-GND-1 | 0.85 | no route | Ground (ignition) | — | |
| W8 | OEM-X-6 | SP-GND-1 | 0.85 | no route | Ground (injector output stages) | — | |
| W9 | SP-GND-1 | SHADOW8-A-34 | 0.85 | no route | Ground 2 | — | |
| W10 | SP-GND-1 | SHADOW8-A-9 | 0.85 | no route | Ground 1 | — | |
| W11 | OEM-X-28 | SP-0V-1 | 0.5 | no route | Ground (electronics + sensor shielding) | — | |
| W12 | OEM-X-40 | SP-0V-1 | 0.5 | no route | O2 sensor signal ground | — | |
| W13 | OEM-X-43 | SP-0V-1 | 0.5 | no route | Crank position sensor (-) | — | |
| W14 | OEM-X-44 | SP-0V-1 | 0.5 | no route | Sensor ground (IAT/ECT/TPS) | — | |
| W15 | OEM-X-71 | SP-0V-1 | 0.5 | no route | Knock sensor ground/shield | — | |
| W16 | SP-0V-1 | SHADOW8-A-4 | 0.5 | no route | 0V analog reference | — | |
| W17 | SP-0V-1 | SHADOW8-A-7 | 0.5 | no route | Trigger ground | — | |
| W18 | OEM-X-59 | SHADOW8-A-3 | 0.5 | no route | +5V sensor supply | — | |
| W19 | OEM-X-16 | SHADOW8-A-5 | 0.5 | no route | Crank position sensor (+) | — | |
| W20 | OEM-X-17 | SHADOW8-A-6 | 0.5 | no route | Camshaft position sensor (Hall) | — | |
| W21 | OEM-X-70 | SHADOW8-A-16 | 0.5 | no route | Knock sensor cylinders 1-3 | — | |
| W22 | OEM-X-69 | SHADOW8-A-24 | 0.5 | no route | Knock sensor cylinders 4-6 | — | |
| W23 | OEM-X-50 | SHADOW8-B-27 | 0.5 | no route | Ignition coil cylinder 1 | — | |
| W24 | OEM-X-51 | SHADOW8-B-28 | 0.5 | no route | Ignition coil cylinder 2 | — | |
| W25 | OEM-X-52 | SHADOW8-B-29 | 0.5 | no route | Ignition coil cylinder 3 | — | |
| W26 | OEM-X-23 | SHADOW8-B-30 | 0.5 | no route | Ignition coil cylinder 4 | — | |
| W27 | OEM-X-25 | SHADOW8-B-31 | 0.5 | no route | Ignition coil cylinder 5 | — | |
| W28 | OEM-X-24 | SHADOW8-B-32 | 0.5 | no route | Ignition coil cylinder 6 | — | |
| W29 | OEM-X-33 | SHADOW8-B-2 | 0.5 | no route | Injector cylinder 1 | — | |
| W30 | OEM-X-32 | SHADOW8-B-3 | 0.5 | no route | Injector cylinder 2 | — | |
| W31 | OEM-X-31 | SHADOW8-B-4 | 0.5 | no route | Injector cylinder 3 | — | |
| W32 | OEM-X-5 | SHADOW8-B-5 | 0.5 | no route | Injector cylinder 4 | — | |
| W33 | OEM-X-3 | SHADOW8-B-6 | 0.5 | no route | Injector cylinder 5 | — | |
| W34 | OEM-X-4 | SHADOW8-B-7 | 0.5 | no route | Injector cylinder 6 | — | |
| W35 | OEM-X-45 | SP-SHD-1 | 0.5 | no route | Shield ground | — | |
| W36 | SP-SHD-1 | SHADOW8-A-8 | 0.5 | no route | Shield | — | |
| W37 | OEM-X-56 | SHADOW8-B-21 | 0.5 | no route | Ignition switch (terminal 15) | — | |
| W38 | OEM-X-1 | SHADOW8-B-10 | 0.5 | no route | Fuel pump relay control | — | |
| W39 | OEM-X-27 | SHADOW8-B-11 | 0.5 | no route | Main relay control | — | |
| W40 | OEM-X-38 | SHADOW8-B-12 | 0.5 | no route | O2 sensor heater relay control | — | |
| W41 | OEM-X-2 | SHADOW8-B-13 | 0.5 | no route | Idle speed control valve (close winding) | — | |
| W42 | OEM-X-29 | SHADOW8-B-14 | 0.5 | no route | Idle speed control valve (open winding) | — | |
| W43 | OEM-X-36 | SHADOW8-B-15 | 0.5 | no route | Evap purge solenoid | — | |
| W44 | OEM-X-7 | SHADOW8-B-16 | 0.5 | no route | VANOS intake camshaft solenoid | — | |
| W45 | OEM-X-8 | SHADOW8-B-17 | 0.5 | no route | Check engine light (MIL) | — | |
| W46 | OEM-X-41 | SHADOW8-A-10 | 0.5 | no route | Mass air flow (MAF) signal | — | |
| W47 | OEM-X-73 | SHADOW8-A-11 | 0.5 | no route | Throttle position (TPS) | — | |
| W48 | OEM-X-13 | SHADOW8-A-12 | 0.5 | no route | O2 sensor signal | — | |
| W49 | OEM-X-78 | SHADOW8-A-13 | 0.5 | no route | Engine coolant temperature (ECT) | — | |
| W50 | OEM-X-77 | SHADOW8-A-14 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W51 | OEM-X-42 | SHADOW8-A-26 | 0.5 | no route | Vehicle speed 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 |
| connector | BMW-E36-DME-CONN | BMW | E36 DME (M3.1/M3.3.1) harness connector | 1.000 | ea |
| terminal | 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 40.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (7)
| Severity | Code | Subject | Message |
|---|---|---|---|
| info | NET_FAMILY | OEM-X-29 ↔ SHADOW8-B-14 | OEM-X-29 "Idle speed control valve (open winding)" [low_side_out] is wired to SHADOW8-B-14 "Aux output 5" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-X-36 ↔ SHADOW8-B-15 | OEM-X-36 "Evap purge solenoid" [low_side_out] is wired to SHADOW8-B-15 "Aux output 6" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-X-7 ↔ SHADOW8-B-16 | OEM-X-7 "VANOS intake camshaft solenoid" [low_side_out] is wired to SHADOW8-B-16 "Aux output 7" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-X-77 ↔ SHADOW8-A-14 | OEM-X-77 "Intake air temperature (IAT)" [temp_in] is wired to SHADOW8-A-14 "Analog voltage 5" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-X-78 ↔ SHADOW8-A-13 | OEM-X-78 "Engine coolant temperature (ECT)" [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. |
| info | NET_FAMILY | OEM-X-8 ↔ SHADOW8-B-17 | OEM-X-8 "Check engine light (MIL)" [low_side_out] is wired to SHADOW8-B-17 "Aux output 8" [switch_out]. Configure this output as low side. |
| info | UNMAPPED | OEM | 1 optional OEM pins are not mapped: OEM-X-47 Tachometer output |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Fit check: unconfirmed. Confirm these before building: - Trigger pattern for BMW M50 not found in the ECU's docs (SL-series lists only generic Crank Index + Sync inputs; no BMW trigger preset) - This car has EWS-II/III (late E36) immobilizer; needs a delete/bypass Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. 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 - SHADOW8-A 25: Knock 2 − left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors - OEM-X 47: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on Emtron Shadow 8
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 |
| 4 | vendor_doc | Link BMWLink E36X (G4X) plug-in install manual | https://linkecu.com/documentation/E36X.pdf | archive | 2026-10-05 | 010cda3acd08 |
| 2 | community_copy | bimmer-service: Bosch Motronic M3.3.1 pinout (E36 M50) | https://www.bimmer-service.com/2025/11/17/bosch-motronic-m3-3-1-pinout-wiring-diagram/ | — | — | — |