| A | Battery |
| B | Starter |
| C | Alternator |
| C1 | Voltage regulator |
| D | Ignition/starter switch |
| T1a | Single connector, blue, in engine compartment |
| T6z | 6-pin connector, red, connector point, electronics box, plenum chamber |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| 11 | Earth point, in battery box |
| 83 | Earth connection -1-, in wiring harness |
| 121 | Earth connection -2-, in front right wiring harness |
| A17 | Connection (61), in dash panel wiring harness |
| A86 | Connection (50a), in dash panel wiring harness |
| * | Only models with manual gearbox |
| G70 | Air mass meter |
| J17 | Fuel pump relay |
| J220 | Motronic control unit |
| N30 | Injector, cylinder 1 |
| N31 | Injector, cylinder 2 |
| N32 | Injector, cylinder 3 |
| N33 | Injector, cylinder 4 |
| N75 | Charge pressure control solenoid valve |
| N80 | Activated charcoal filter system solenoid valve 1 |
| T6z | 6-pin connector, red, connector point, electronics box, plenum chamber |
| T10z | 10-pin connector, yellow, connector point, electronics box, plenum chamber |
| 83 | Earth connection -1-, in front right wiring harness |
| D22 | Connection (87a for injectors), in engine compartment wiring harness, right |
| D23 | Connection (87F), in engine compartment wiring harness, right |
| G2 | Coolant temperature sender |
| G40 | Hall sender |
| G42 | Intake air temperature sender |
| G61 | Knock sensor I |
| G62 | Coolant temperature sender |
| G66 | Knock sensor II |
| J60 | Automatic gearbox relay |
| J220 | Motronic control unit |
| T3o | 3-pin connector, green, in engine compartment, left |
| T3n | 3-pin connector, blue, in engine compartment, left |
| T6z | 6-pin connector, red, connector point, electronics box, plenum chamber |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| T10m | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T10y | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| T10z | 10-pin connector, yellow, connector point, electronics box, plenum chamber |
| 121 | Earth connection -2-, in front right wiring harness |
| 139 | Earth connection (sender earth), in engine compartment wiring harness, right |
| 199 | Earth connection -3-, in dash panel wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A45 | Connection (engine speed signal), in dash panel wiring harness |
| * | Only models with automatic gearbox |
| E87 | Control and display unit for air conditioner |
| G39 | Lambda probe |
| J189 | Auto-check system |
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| T4y | 4-pin connector, black, in engine compartment, right |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum |
| T10v | 10-pin connector, brown, right connector point, A pillar |
| T10x | 10-pin connector, blue, right connector point, A pillar |
| T10y | 10-pin connector, blue, connector point, electronics box, plenum chamber |
| Z19 | Lambda probe heater |
| * | Only models with automatic gearbox |
| ** | Only models with auto-check system |
| *** | Only models with air conditioner |
| F4 | Reversing light switch |
| N | Ignition coil 1 |
| N122 | Final output stage |
| N128 | Ignition coil 2 |
| N158 | Ignition coil 3 |
| N163 | Ignition coil 4 |
| P | Spark plug connector |
| Q | Spark plugs |
| T4f | 4-pin connector, black, on ignition final output stage |
| T5c | 5-pin connector, black, on ignition final output stage |
| T6z | 6-pin connector, red, connector point, electronics box, plenum chamber |
| T10 | 10-pin connector, brown, connector point, electronics box, plenum chamber |
| 18 | Earth point, on engine block |
| 83 | Earth connection -1-, in front right wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A20 | Connection (15a), in dash panel wiring harness |
| A70 | Connection (15a, fuse 231), in dash panel wiring harness |
| D14 | Connection (ignition coil - control unit), in front right wiring harness |
| * | Only models with manual gearbox |
| F1 | Oil pressure switch |
| F66 | Coolant shortage indicator switch |
| G | Fuel gauge sender |
| G6 | Fuel pump |
| G22 | Speedometer sender (Hall sender, on gearbox) |
| J218 | Combi-processor in dash panel insert |
| K2 | Alternator warning lamp |
| T6e | 6-pin connector, blue, left connector point, A pillar |
| T10a | 10-pin connector, brown, left connector point, A pillar |
| T10m | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 83 | Earth connection -1-, in front right wiring harness |
| 86 | Earth connection -1-, in rear wiring harness |
| 121 | Earth connection -2-, in front right wiring harness |
| 135 | Earth connection -2-, in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A50 | Positive (+) connection (30as), in dash panel wiring harness |
