| D | Ignition/starter switch |
| J189 | Auto-check system |
| J218 | Combi-processor in dash panel insert |
| J402 | Operating electronics control unit, navigation |
| S5 | Fuse in fuse box |
| S15 | Fuse in fuse box |
| T20 | 20-pin connector, red/white, on dash panel insert |
| T26 | 26-pin connector, on operating electronics control unit, navigation |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| T32c | 32-pin connector, grey, on dash panel insert |
| A1 | Positive (+) connection (30a), in dash panel wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A19 | Connection (58s), in dash panel wiring harness (switch illumination) |
| A20 | Positive (+) connection (15a), in dash panel wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A52 | Positive (+) connection 2 (30), in dash panel wiring harness |
| * | Models with 4- and 6-cylinder engine |
| ** | Models with 8 cylinder engines |
| J402 | Operating electronics control unit, navigation |
| J412 | Operating electronics control unit, telephone |
| R | Radio |
| R36 | Telephone transmitter and receiver unit |
| T6x | 6-pin connector, green, radio connector I-2 |
| T10x | 10-pin connector, pink, connector point, A pillar, right |
| T10z | 10-pin connector, red, radio connector IV |
| T15s | 11-pin connector, brown, connector point left A pillar |
| T26 | 26-pin connector, on operating electronics control unit, navigation |
| A117 | Connection (enable), in dash panel wiring harness |
| A118 | Connection (data), in dash panel wiring harness |
| A119 | Connection (clock), in dash panel wiring harness |
| * | Models with telephone |
| ** | Models with mobile phone |
| # | Models without radio |
| ## | Models with radio |
| E199 | Navigation system operating unit |
| J402 | Operating electronics control unit, navigation |
| R | Radio |
| R39 | Telephone/navigation systems loudspeaker |
| T2av | 2-pin connector, black, for loudspeaker, B pillar, left |
| T10z | 10-pin connector, red, radio connector IV |
| T15s | 11-pin connector, brown, connector point left A pillar |
| T26 | 26-pin connector, on operating electronics control unit, navigation |
| 135 | Earth connection -2-, in dash panel wiring harness |
| 199 | Earth connection -3-, in dash panel wiring harness |
| * | Models without radio |
| ** | Models with radio |
| *** | Both possible |
| J401 | Navigation system with CD drive control unit |
| J402 | Operating electronics control unit, navigation |
| R50 | Navigation aerial (GPS) |
| T2ax | 2-pin connector, in bootlid |
| T10ab | 10-pin connector, purple, connector point, A pillar, right |
| T12 | 12-pin connector, black, on operating electronics control unit, navigation |
| 135 | Earth connection -2-, in dash panel wiring harness |
| 199 | Earth connection -3-, in dash panel wiring harness |
| 264 | Earth connection (external screening ), in navigation wiring harness |
| * | Both possible |
| ** | Saloon models |
| F4 | Reversing light switch |
| G197 | Magnetic field sender (compass) |
| J104 | ABS with EDL control unit |
| J401 | Navigation system with CD drive control unit |
| M16 | Reversing light bulb, left |
| M17 | Reversing light bulb, right |
| N219 | Heated rear window shunt resistor |
| R24 | Aerial amplifier |
| R52 | Radio/telephone/navigation aerial (GPS) |
| T3au | 3-pin connector, red, connector point, electronics box, plenum chamber |
| T10f | 10-pin connector, brown, connector point, A pillar, left |
| T10ab | 10-pin connector, purple, connector point, A pillar, right |
| T10au | 10-pin connector, grey, connector point, A pillar, right |
| Z1 | Heated rear window |
| 75 | Earth point, right rear pillar |
| A87 | Connection (RF (reversing light)), in dash panel wiring harness |
| A127 | Connection (rear left speed sensor), in dash panel wiring harness |
| A128 | Connection (rear right speed sensor), in dash panel wiring harness |
| * | ABS 5.3 |
| ** | ABS with electronic stability program |
| # | Saloon models |
| ## | Avant models |
