| D | Ignition/starter switch |
| J285 | Control unit with display in dash panel insert |
| J412 | Operating electronics control unit, telephone |
| R38 | Telephone microphone |
| S5 | Fuse in fuse box |
| S8 | Fuse in fuse box |
| T2cy | 2-pin connector, for microphone, near interior light, front |
| T3as | 3-pin connector, blue, connector point, A pillar, left |
| T15s | 15-pin connector, blue, connector point, A pillar, left |
| T17d | 17-pin connector, grey, connector point, A pillar, left |
| T18b | 18-pin connector, on operating electronics control unit, telephone |
| T32 | 32-pin connector, blue, on dash panel insert |
| 45 | Earth point, behind dash panel - centre |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A19 | Connection (58s), in dash panel wiring harness (switch illumination) |
| A20 | Connection (15a), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A108 | Connection (speed signal), in dash panel wiring harness |
| V32 | Positive (+) connection (30), in telephone wiring harness |
| J401 | Navigation system with CD drive control unit |
| J402 | Operating electronics control unit, navigation |
| J412 | Operating electronics control unit, telephone |
| R | Radio |
| R39 | Telephone/navigation systems loudspeaker |
| T2av | 2-pin connector, black, for loudspeaker, B pillar, left |
| T6x | 6-pin connector, green, radio connector I-2 |
| T8f | 8-pin connector, black, radio connector III |
| T10x | 10-pin connector, green, connector point, A pillar, right |
| T10z | 10-pin connector, red, radio connector IV |
| T15s | 15-pin connector, blue, connector point, A pillar, left |
| T17n | 17-pin connector, brown, connector point, A pillar, right |
| T18b | 18-pin connector, on operating electronics control unit, telephone |
| T20b | 20-pin connector, black, on navigation control unit |
| * | Models without radio |
| ** | Models with radio |
| *** | Models with radio navigation system |
| # | Models without navigation system 'NS Low' |
| ## | Models with navigation system 'NS Low' |
| J412 | Operating electronics control unit, telephone |
| R | Radio |
| R1 | Aerial connection |
| R24 | Aerial amplifier |
| R45 | Aerial amplifier (telephone/radio) |
| R51 | Radio/telephone/auxiliary heater aerial |
| R52 | Radio/telephone aerial |
| R54 | Mobile telephone |
| R86 | Aerial amplifier, mobile telephone (compensator) |
| T16e | 16-pin connector, on mobile phone |
| T18b | 18-pin connector, on operating electronics control unit, telephone |
| 45 | Earth point, behind dash panel - centre |
| * | Models with rod aerial or roof aerial |
| ** | Avant and saloon models with insulating glass |
