| D | Ignition/starter switch |
| J503 | Radio navigation system control unit |
| S258 | Radio navigation system fuse |
| SB37 | Fuse, in fuse holder |
| T8d | 8-pin connector, on the radio navigation system control unit (black) |
| T16a | 16-pin connector, under the glove compartment on the driver's side (diagnostic connection) |
| 346 | Earth connection (audio), in dash panel wiring harness |
| 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 |
| * | only on vehicles with TV tuner |
| D | Ignition/starter switch |
| F4 | Reversing light switch |
| J104 | ABS control unit with EDL/ABS with EDL and TCS/ESP |
| J503 | Radio navigation system control unit |
| J559 | Traffic information control unit, behind dash panel |
| T10p | 10-pin connector, on right A-pillar (grey) |
| T12f | 12-pin connector, at traffic information control unit |
| T26b | 26-pin connector, on radio navigation system control unit |
| A2 | Positive connection (15), in dash panel wiring harness |
| A87 | Connection (reversing lights), in dash panel wiring harness |
| A127 | Connection (rear left speed sensor), in dash panel wiring harness |
| * | not valid for vehicles with automatic gearbox |
| J503 | Radio navigation system control unit |
| J559 | Traffic information control unit, behind dash panel |
| K | Dash panel insert |
| T12f | 12-pin connector, at traffic information control unit |
| T26b | 26-pin connector, on radio navigation system control unit |
| 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 |
| A148 | Connection (CAN H, navigation), in dash panel wiring harness |
| A149 | Connection (CAN L, navigation), in dash panel wiring harness |
| * | only on vehicles with TV tuner |
| J415 | TV tuner |
| J503 | Radio navigation system control unit |
| R55 | TV aerial -1- |
| R56 | TV aerial -2- |
| R57 | TV aerial -3- |
| R58 | TV aerial -4- |
| R82 | Aerial amplifier -1- for TV, under rear shelf |
| R83 | Aerial amplifier -2- for TV, under rear shelf |
| R84 | Aerial amplifier -3- for TV, under rear shelf |
| R85 | Aerial amplifier -4- for TV, under rear shelf |
| T54a | 54-pin connector, on TV tuner |
| * | only on vehicles with TV tuner |
| J412 | Operating electronics control unit/telephone (interface box) |
| J503 | Radio navigation system control unit |
| R12 | Amplifier, under rear shelf |
| T8d | 8-pin connector, on the radio navigation system control unit (black) |
| T15f | 15-pin connector, on right A-pillar (white) |
| T18c | 18-pin connector, at operating electronics control unit/telephone (interface box) |
| T20b | 20-pin connector, on radio navigation system control unit |
| T23b | 23-pin connector, at amplifier |
| T24a | 24-pin connector, at amplifier |
| T26b | 26-pin connector, on radio navigation system control unit |
| 255 | Earth connection -1-, in radio amplifier wiring harness |
| 610 | Earth point (audio), front below centre console |
| A129 | Connection (mute circuit), in dash panel wiring harness |
| only for vehicles with telephone system |
| J503 | Radio navigation system control unit |
| R12 | Amplifier, under rear shelf |
| S260 | Amplifier fuse, at additional relay holder behind the relay holder |
| T15f | 15-pin connector, on right A-pillar (white) |
| T20b | 20-pin connector, on radio navigation system control unit |
| T23b | 23-pin connector, at amplifier |
| T24a | 24-pin connector, at amplifier |
| V21 | Positive connection (30a), in radio amplifier wiring harness |
| only for vehicles with telephone system |
| R12 | Amplifier, under rear shelf |
| 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 |
| T4b | 4-pin connector, on left A-pillar (black) |
| T4c | 4-pin connector, at bass loudspeaker, front left |
| T4e | 4-pin connector, on right A-pillar (black) |
| T4f | 4-pin connector, at bass loudspeaker, front right |
| T8m | 8-pin connector, on left A-pillar (black) |
| T8n | 8-pin connector, on right A-pillar (black) |
| T23b | 23-pin connector, at amplifier |
| R12 | Amplifier, under rear shelf |
| 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 |
| 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) |
| T23b | 23-pin connector, at amplifier |
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