| R | Radio |
| R11 | Aerial |
| R20 | Treble loudspeaker, front left |
| R21 | Bass loudspeaker, front left |
| R22 | Treble loudspeaker, front right |
| R23 | Bass loudspeaker, front right |
| R24 | Aerial amplifier |
| S92 | Radio fuse |
| SB45 | Fuse, in fuse holder |
| T2m | 2-pin connector, at treble loudspeaker, front left |
| T2n | 2-pin connector, at treble loudspeaker, front right |
| T4m | 4-pin connector, on left A-pillar (black) |
| T4n | 4-pin connector, on right A-pillar (black) |
| T4u | 4-pin connector, at bass loudspeaker, front left |
| T4v | 4-pin connector, at bass loudspeaker, front right |
| T8d | 8-pin connector, at radio (black) |
| T8n | 8-pin connector, at radio (brown) |
| A11 | Positive connection (58b), in wiring harness behind dash panel |
| A21 | Positive connection (86s), in wiring harness behind dash panel |
| A27 | Connection (speed signal), in wiring harness behind dash panel |
| A46 | Positive connection (30 radio), in wiring harness behind dash panel |
| A76 | Connection (diagnosis wire K), in wiring harness behind dash panel, left |
| J412 | Operating electronics control unit/telephone (interface box) |
| K | Dash panel insert |
| R | Radio |
| R14 | Treble loudspeaker, rear left |
| R15 | Bass loudspeaker, rear left |
| R16 | Treble loudspeaker, rear right |
| R17 | Bass loudspeaker, rear right |
| T2o | 2-pin connector, at treble loudspeaker, rear left |
| T2p | 2-pin connector, at treble loudspeaker, rear right |
| T2r | 2-pin connector, at bass loudspeaker, rear left |
| T2s | 2-pin connector, at bass loudspeaker, rear left |
| T2t | 2-pin connector, at bass loudspeaker, rear right |
| T2u | 2-pin connector, at bass loudspeaker, rear right |
| T4o | 4-pin connector, on left B-pillar (black) |
| T4p | 4-pin connector, on right B-pillar (black) |
| T8d | 8-pin connector, at radio (black) |
| T8n | 8-pin connector, at radio (brown) |
| T18d | 18-pin connector, at operating electronics control unit/telephone (interface box) |
| T20a | 20-pin connector, at radio |
| T32a | 32-pin connector, at dash panel insert |
| 606 | Earth point, under the centre console, near gear stick |
| A146 | Connection (CAN H, convenience), in wiring harness behind dash panel |
| A147 | Connection (CAN L, convenience), in wiring harness behind dash panel |
| * | only for vehicles with 8 loudspeakers |
| ** | only for Symphony with CD and large information display in dash panel insert |
| only for vehicles with telephone preinstallation 2 Cullmann |
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