| J519 | Vehicle voltage control unit |
| J527 | Steering column electronics control unit |
| R | Radio |
| R11 | Aerial |
| R24 | Aerial amplifier |
| S29 | Radio fuse |
| SB50 | Fuse 50 on fuse holder B |
| T4ak | 4-pin connector, at steering column electronics control unit |
| T8p | 8-pin connector, at radio (black) |
| T18b | 18-pin connector, at onboard supply control unit (black) |
| 477 | Earth connection (audio), in main wiring harness |
| 687 | Earth point 1 on the middle tunnel |
| B397 | Connection 1 (convenience CAN bus, High) in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, Low) in main wiring harness |
| * | for vehicles with multi-function adjuster for radio / radio and telephone |
| ** | not valid for radio pre-installation |
| J412 | Mobile telephone operating electronics control unit |
| J519 | Vehicle voltage control unit |
| R | Radio |
| R20 | Treble loudspeaker, front left |
| R21 | Bass loudspeaker, front left |
| R22 | Treble loudspeaker, front right |
| R23 | Bass loudspeaker, front right |
| T4ad | 4-pin connector, at bass loudspeaker, front left |
| T4ae | 4-pin connector, at bass loudspeaker, front right |
| T8n | 8-pin connector, at radio (brown) |
| T12e | 12-pin connector, at radio (green) |
| T28a | 28-pin connector, on the left A-pillar |
| T28b | 28-pin connector, on the right A-pillar |
| T54a | 54-pin connector, at mobile telephone operating electronics control unit |
| B101 | Connection (positive, front left loudspeaker), in main wiring harness |
| B102 | Connection (negative, front left loudspeaker), in main wiring harness |
| B103 | Connection (positive, front right loudspeaker), in main wiring harness |
| B104 | Connection (negative, front right loudspeaker), in main wiring harness |
| ** | not valid for radio pre-installation |
| for vehicles with telephone system |
| J519 | Vehicle voltage control unit |
| R | Radio |
| R14 | Treble loudspeaker, rear left |
| R15 | Bass loudspeaker, rear left |
| R16 | Treble loudspeaker, rear right |
| R17 | Bass loudspeaker, rear right |
| R199 | Connection for external audio sources |
| T4af | 4-pin connector, at bass loudspeaker, rear left |
| T4ag | 4-pin connector, at bass loudspeaker, rear right |
| T8n | 8-pin connector, at radio (brown) |
| T11a | 11-pin connector, on the left B-pillar |
| T11b | 11-pin connector, on the right B-pillar |
| T12d | 12-pin connector, at radio (blue) |
| * | for vehicles with 8 loudspeakers |
| ** | not valid for radio pre-installation |
| for vehicles with connection for external audio sources |
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