| D | Ignition/starter switch |
| R | Radio |
| R11 | Aerial |
| R24 | Aerial amplifier |
| S92 | Radio fuse |
| SB37 | Fuse, in fuse holder |
| T8d | 8-pin connector, at radio (black) |
| T16a | 16-pin connector, under the glove compartment on the driver's side (diagnostic connection) |
| 610 | Earth point (audio), front below centre console |
| A19 | Connection (58d), in dash panel wiring harness |
| A21 | Positive connection (86s), in dash panel wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A164 | Positive connection -2- (30a), in dash panel wiring harness |
| J412 | Operating electronics control unit/telephone (interface box) |
| J453 | Multi-function steering wheel control unit |
| R | Radio |
| R20 | Treble loudspeaker, front left |
| R21 | Bass loudspeaker, front left |
| R22 | Treble loudspeaker, front right |
| R23 | Bass loudspeaker, front right |
| T2o | 2-pin connector, at treble loudspeaker, front left |
| T2p | 2-pin connector, at treble loudspeaker, front right |
| T4a | 4-pin connector, on left A-pillar (black) |
| T4b | 4-pin connector, on left A-pillar (black) |
| T4c | 4-pin connector, at bass loudspeaker, front left |
| T4d | 4-pin connector, on right A-pillar (black) |
| T4e | 4-pin connector, on right A-pillar (black) |
| T4f | 4-pin connector, at bass loudspeaker, front right |
| T8d | 8-pin connector, at radio (black) |
| T8l | 8-pin connector, at radio (brown) |
| T8m | 8-pin connector, on left A-pillar (black) |
| T8n | 8-pin connector, on right A-pillar (black) |
| T18c | 18-pin connector, at operating electronics control unit/telephone (interface box) |
| T20b | 20-pin connector, at radio |
| * | only on vehicles with multi-function steering wheel (not valid for Symphony with cassette) |
| only for vehicles with telephone system |
| 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 |
| T2r | 2-pin connector, at treble loudspeaker, rear left |
| T2s | 2-pin connector, at treble loudspeaker, rear right |
| T4a | 4-pin connector, on left A-pillar (black) |
| T4d | 4-pin connector, on right A-pillar (black) |
| T4g | 4-pin connector, at bass loudspeaker, rear left |
| T4h | 4-pin connector, at bass loudspeaker, rear right |
| T6f | 6-pin connector, on left B-pillar (red) |
| T6g | 6-pin connector, on right B-pillar (red) |
| T8l | 8-pin connector, at radio (brown) |
| T8m | 8-pin connector, on left A-pillar (black) |
| T8n | 8-pin connector, on right A-pillar (black) |
| T20b | 20-pin connector, at radio |
| T32b | 32-pin connector, at dash panel insert (green) |
| A146 | Connection (CAN H, convenience), in dash panel wiring harness |
| A147 | Connection (CAN L, convenience), in dash panel wiring harness |
| * | only for Symphony with CD |
| only for Symphony with cassette |
| R | Radio |
| R41 | CD changer |
| T10d | 10-pin connector, on left A-pillar (dark brown) |
| T12e | 12-pin connector, at CD changer |
| T20b | 20-pin connector, at radio |
| 309 | Earth connection -1- (screening), in CD changer wiring harness |
| 310 | Earth connection -2- (screening), in CD changer wiring harness |
| 311 | Earth connection -3- (screening), in CD changer wiring harness |
| 610 | Earth point (audio), front below centre console |