| R | Radio |
| S237 | Fuse 37 in fuse box |
| T1o | Single connector, behind dash panel, centre |
| T8f | 8-pin connector, black, radio connector III |
| T10x | 10-pin connector, green, connector point, A pillar, right |
| T16a | 16-pin connector, diagnosis connection |
| 610 | Earth point (radio), below centre console, front |
| A50 | Positive (+) connection (30a), in dash panel wiring harness |
| A159 | Connection (L), in dash panel wiring harness |
| V1 | Positive (+) connection (30), in rear loudspeaker wiring harness |
| * | Saloon models |
| ** | Avant models |
| E15 | Heated rear window switch |
| J401 | Navigation system with CD drive control unit |
| R | Radio |
| R1 | Aerial connection |
| R11 | Aerial |
| R24 | Aerial amplifier |
| R45 | Aerial amplifier (telephone/radio) |
| R51 | Radio/telephone/auxiliary heater aerial |
| T10z | 10-pin connector, red, radio connector IV |
| T10ba | 10-pin connector, blue, connector point, A pillar, left |
| T17n | 17-pin connector, brown, connector point, A pillar, right |
| T20b | 20-pin connector, black, on navigation control unit |
| Z24 | Heated rear window with window aerial |
| 75 | Earth point, rear pillar, right |
| * | Rear window aerial |
| ** | Roof aerial only on saloon models with insulating glass |
| *** | Rod aerial only on saloon models with insulating glass |
| # | Saloon models |
| ## | Avant models |
| ### | Models with navigation system 'NS Low', does not apply to radio navigation system |
| J285 | Control unit with display in dash panel insert |
| J453 | Multi-function steering wheel control unit |
| J526 | Telephone/telematics control unit |
| R | Radio |
| T6x | 6-pin connector, green, radio connector I-2 |
| T10x | 10-pin connector, green, connector point, A pillar, right |
| T15s | 15-pin connector, blue, connector point, A pillar, left |
| T32a | 32-pin connector, green, on dash panel insert |
| T32c | 32-pin connector, grey, on dash panel insert |
| T46 | 46-pin connector, connector 1, telematics |
| A146 | Connection (convenience CAN bus, high), in dash panel wiring harness |
| A147 | Connection (convenience CAN bus, low), in dash panel wiring harness |
| A148 | Connection (navigation CAN bus, high), in dash panel wiring harness |
| A149 | Connection (navigation CAN bus, low), in dash panel wiring harness |
| • | CAN bus (data wire) |
| * | Models with auto-check system |
| ** | Models without auto-check system |
| *** | No longer fitted from radio generation 2 onwards |
| # | Models with navigation system 'NS Low' |
| ## | Models with telematics |
| ### | Models with multi-function steering wheel |
| J412 | Operating electronics control unit, telephone |
| J429 | Central locking control unit |
| J526 | Telephone/telematics control unit |
| R | Radio |
| R43 | Amplifier with bass loudspeaker (luggage compartment, right) |
| T1e | Single connector, on radio |
| T6w | 6-pin connector, yellow, radio connector I-1 |
| T10z | 10-pin connector, red, radio connector IV |
| T10bg | 10-pin connector, connector 2, on telematics control unit |
| T15s | 15-pin connector, blue, connector point, A pillar, left |
| T17 | 17-pin connector, orange, connector point, A pillar, right |
| T18b | 18-pin connector, on operating electronics control unit, telephone |
| T46 | 46-pin connector, connector 1, on telematics control unit |
| 133 | Earth connection, in loudspeaker wiring harness |
| 610 | Earth point (radio), below centre console, front |
| * | Models with telephone/telematics |
| ** | Models with mobile phone |
| *** | Models with navigation system 'NS Low' |
| # | Models with anti-theft alarm system |
| R15 | Bass loudspeaker, rear left |
| R17 | Bass loudspeaker, rear right |
| R21 | Bass loudspeaker, front left |
| R23 | Bass loudspeaker, front right |
| R26 | Middle-high tone loudspeaker, front left |
| R27 | Middle-high tone loudspeaker, front right |
| R34 | Middle-treble tone loudspeaker, rear left |
| R35 | Middle-treble tone loudspeaker, rear right |
| R43 | Amplifier with bass loudspeaker (luggage compartment, right) |
| T3ae | 3-pin connector, brown, connector point, A pillar, left |
| T3af | 3-pin connector, brown, connector point, A pillar, right |
| T3ag | 3-pin connector, blue, in B pillar, left |
| T3ah | 3-pin connector, blue, in B pillar, right |
| T3al | 3-pin connector, black, in driver's door |
| T3am | 3-pin connector, black, in front passenger's door |
| T3an | 3-pin connector, black, in door, rear left |
| T3ao | 3-pin connector, black, in door, rear right |
| T4ax | 4-pin connector, on Bose power amplifier |
| * | Bass loudspeaker (saloon models) |
| ** | Bass loudspeaker (Avant models) |
| E15 | Heated rear window switch |
| J515 | Aerial selection control unit |
| R24 | Aerial amplifier |
| R64 | Auxiliary heating radio wave receiver |
| R82 | Aerial amplifier 1, TV |
| R83 | Aerial amplifier 2, TV |
| R84 | Aerial amplifier 3, TV |
| R85 | Aerial amplifier 4, TV |
| T3bh | 3-pin connector, black, on aerial selection control unit |
| T10ab | 10-pin connector, purple, connector point, A pillar, right |
| T10ba | 10-pin connector, blue, connector point, A pillar, left |
| Z1 | Heated rear window |
| Z24 | Heated rear window with window aerial |
| 75 | Earth point, rear pillar, right |
| 610 | Earth point (radio), below centre console, front |
| * | Auxiliary heater with radio-operated remote control |
