| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| J81 | Intake manifold preheating relay |
| N51 | Intake manifold preheating heater element |
| T1 | Single connector, near brake servo unit |
| T1a | Single connector, near starter |
| 30 | Earth point -1-, next to relay plate |
| D50 | Positive (+) connection (30), in engine compartment wiring harness |
| D52 | Positive (+) connection (15a), in engine compartment wiring harness |
| Only models with automatic gearbox |
| F60 | Idling switch |
| G40 | Hall sender |
| G127 | Throttle valve positioner sender |
| J220 | Mono-Motronic control unit, in plenum chamber, left |
| J362 | Immobilizer control unit |
| N152 | Ignition transformer |
| N157 | Ignition transformer output stage |
| O | Ignition distributor |
| P | Spark plug connector |
| Q | Spark plugs |
| T3 | 3-pin connector, ignition transformer output stage |
| T6 | 6-pin connector |
| T28a | 28-pin connector, on engine left |
| T45 | 45-pin connector, on Mono-Motronic control unit |
| V60 | Throttle valve positioner |
| 18 | Earth point, on engine block |
| 173 | Earth connection -1-, in Mono-Motronic wiring harness |
| D51 | Positive (+) connection -1- (15), in engine compartment wiring harness |
| Only models with automatic gearbox |
| G2 | Coolant temperature sender |
| G42 | Intake air temperature sender |
| G62 | Coolant temperature sender |
| G69 | Throttle valve potentiometer |
| J217 | Automatic gearbox control unit, in plenum chamber, centre |
| J220 | Mono-Motronic control unit, in plenum chamber, left |
| N181 | Injectors |
| T5 | 5-pin connector, in plenum chamber |
| T28a | 28-pin connector, on engine left |
| T45 | 45-pin connector, on Mono-Motronic control unit |
| 18 | Earth point, on engine block |
| 174 | Earth connection -2-, in Mono-Motronic wiring harness |
| U3 | Connection -1-, in automatic gearbox wiring harness |
| Only models with automatic gearbox |
| * | Only manual gearbox |
| G | Fuel gauge sender |
| G6 | Fuel pump |
| G22 | Speedometer sender |
| G39 | Lambda probe |
| J17 | Fuel pump relay |
| J220 | Mono-Motronic control unit, in plenum chamber, left |
| J362 | Immobilizer control unit |
| N80 | Activated charcoal filter system solenoid valve 1 (pulsed) |
| T4 | 4-pin connector |
| T6 | 6-pin connector |
| T28a | 28-pin connector, on engine left (only models with automatic gearbox) |
| T45 | 45-pin connector, on Mono-Motronic control unit |
| 12 | Earth point, in engine compartment, left |
| 18 | Earth point, on engine block |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| F18 | Radiator fan thermo-switch |
| G1 | Fuel gauge |
| G3 | Coolant temperature gauge |
| J285 | Control unit with display in dash panel insert |
| K2 | Alternator warning lamp |
| K28 | Coolant temperature/coolant shortage warning lamp |
| T3b | 3-pin connector, behind dash panel, left |
| T28 | 28-pin connector, on dash panel insert |
| T28a | 28-pin connector, on engine left |
| V7 | Radiator fan |
| 18 | Earth point, on cylinder block |
| 85 | Earth connection -1-, in engine compartment wiring harness |
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