| J412 | Operating electronics control unit/telephone (interface box) |
| 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 |
| S242 | Fuse in fuse holder |
| T2t | 2-pin connector, at bass loudspeaker, front left |
| T2u | 2-pin connector, at bass loudspeaker, front left |
| T2v | 2-pin connector, at treble loudspeaker, front left |
| T2w | 2-pin connector, at bass loudspeaker, front right |
| T2x | 2-pin connector, at bass loudspeaker, front right |
| T2y | 2-pin connector, at treble loudspeaker, front right |
| T8d | 8-pin connector, at radio (black) |
| T8f | 8-pin connector, at radio (brown) |
| T10b | 10-pin connector, on left A-pillar (black) |
| T10c | 10-pin connector, on right A-pillar (black) |
| T18c | 18-pin connector, at operating electronics control unit/telephone (interface box) |
| A4 | Positive connection (58b), in wiring harness behind dash panel |
| A21 | Connection (86s), in wiring harness behind dash panel |
| A76 | Connection (diagnosis wire K), in wiring harness behind dash panel |
| A98 | Positive connection (30Ra), in wiring harness behind dash panel |
| only for vehicles with telephone system |
| R | Radio |
| R14 | Treble loudspeaker, rear left |
| R15 | Bass loudspeaker, rear left |
| R16 | Treble loudspeaker, rear right |
| R17 | Bass loudspeaker, rear right |
| T2u | 2-pin connector, at treble loudspeaker, rear left |
| T2v | 2-pin connector, at bass loudspeaker, rear left |
| T2w | 2-pin connector, at bass loudspeaker, rear left |
| T2x | 2-pin connector, at treble loudspeaker, rear right |
| T2y | 2-pin connector, at bass loudspeaker, rear right |
| T2z | 2-pin connector, at bass loudspeaker, rear right |
| T8f | 8-pin connector, at radio (brown) |
| T10d | 10-pin connector, on left B-pillar (black) |
| T10e | 10-pin connector, on right B-pillar (black) |
| * | only for vehicles with 8 loudspeakers |
| J412 | Operating electronics control unit/telephone (interface box) |
| K | Dash panel insert |
| R | Radio |
| T8d | 8-pin connector, at radio (black) |
| T18c | 18-pin connector, at operating electronics control unit/telephone (interface box) |
| T20b | 20-pin connector, at radio |
| T32b | 32-pin connector, at dash panel insert (green) |
| 45 | Earth point, behind dash panel |
| 255 | Earth connection -1-, in wiring harness behind dash panel (only for vehicles with telephone system) |
| A27 | Connection (speed signal), in wiring harness behind dash panel, left |
| W29 | Connection (A bus), in wiring harness behind dash panel |
| W30 | Connection (B bus), in wiring harness behind dash panel |
| only for vehicles with telephone system |
| only for Symphony |
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