| A | Battery |
| J285 | Control unit with display in dash panel insert |
| R | Radio |
| S92 | Radio fuse |
| T8 | 8-pin connector, black, radio connector III |
| T15 | 15-pin connector, black, in centre console |
| T16a | 16-pin connector, diagnosis connection |
| T32a | 32-pin connector, green, on dash panel insert |
| TV2 | Terminal 30 junction box |
| 255 | Earth connection -1-, in radio wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| V37 | Positive (+) connection (30), in communication systems wiring harness |
| V40 | Connection (diagnosis wire K), in communication systems wiring harness |
| R | Radio |
| R41 | CD changer |
| T6h | 6-pin connector, green, radio connector I - 2 |
| T8 | 8-pin connector, black, radio connector III |
| T8a | 8-pin connector, blue, radio connector I - 3 |
| T10s | 10-pin connector, black, footwell, right, at wheelhouse, behind carpet |
| T15 | 15-pin connector, black, in centre console |
| T16 | 16-pin connector, connector plug C at V94 |
| V94 | Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system |
| 45 | Earth point, behind dash panel-centre |
| 255 | Earth connection -1-, in radio wiring harness |
| V14 | Connection (screening), in CD changer wiring harness |
| * | Models with CD changer |
| E221 | Operating unit in steering wheel |
| J285 | Control unit with display in dash panel insert |
| J453 | Multi-function steering wheel control unit |
| J661 | Control unit for radio controls in rear |
| R | Radio |
| T5b | 5-pin connector, yellow, behind steering column switch trim |
| T6h | 6-pin connector, green, radio connector I - 2 |
| T10s | 10-pin connector, black, footwell, right, at wheelhouse, behind carpet |
| T15 | 15-pin connector, black, in centre console |
| T32a | 32-pin connector, green, on dash panel insert |
| 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 multi-function steering wheel |
| ** | Models with remote control for radio, operated from rear seats (see Current Flow Diagram: Multi-function steering wheel) |
| *** | No longer fitted from radio generation 2 onwards |
| J401 | Navigation system with CD drive control unit |
| J412 | Operating electronics control unit, telephone |
| J507 | Control unit for voice control |
| J526 | Telephone/telematics control unit |
| R | Radio |
| T8m | 8-pin connector, blue, on navigation control unit |
| T10u | 10-pin connector, red, radio connector IV |
| T10ae | 10-pin connector, on telephone/telematics control unit, connector 2 |
| T18a | 18-pin connector, (VDA connector), on operating electronics control unit, telephone |
| T26f | 26-pin connector, on control unit for voice control |
| T46 | 46-pin connector, on telephone/telematics control unit, connector 1 |
| V27 | Connection (mute circuit), in navigation wiring harness |
| V49 | Connection (audio frequency, NF +), in communication wiring harness |
| V50 | Connection (audio frequency, NF -), in communication wiring harness |
| * | Models with telephone, telematics |
| ** | Models with mobile phone |
| *** | Models with navigation system 'NS Low' |
| # | Only models without navigation system |
| ## | Telephone, telematics with voice control |
| R | Radio |
| 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 |
| R44 | Amplifier with bass loudspeaker (luggage compartment, left) |
| T6g | 6-pin connector, yellow, radio connector I-1 |
| 75 | Earth point, right rear pillar |
| 133 | Earth connection, in loudspeaker wiring harness |
| E15 | Heated rear window switch |
| J515 | Aerial selection control unit |
| R82 | Aerial amplifier 1, TV |
| R83 | Aerial amplifier 2, TV |
| R84 | Aerial amplifier 3, TV |
| R85 | Aerial amplifier 4, TV |
| T3ba | 3-pin connector, black, on aerial selection control unit |
| T6t | 6-pin connector, red, footwell, right, at wheelhouse, behind carpet |
| Z1 | Heated rear window |
| Z24 | Heated rear window with window aerial |
| 75 | Earth point, right rear pillar |
| 280 | Earth connection, in communication systems wiring harness |
