| D | Ignition/starter switch |
| J526 | Telephone/telematics control unit |
| S5 | Fuse in fuse box/relay plate |
| S8 | Fuse in fuse box/relay plate |
| T3av | 3-pin connector, brown, in centre console |
| T10av | 10-pin connector, on telephone/telematics control unit |
| T15n | 15-pin connector, brown, in centre console |
| 270 | Earth connection, in telephone wiring harness |
| 610 | Earth point (audio), below centre console, front |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A4 | Positive (+) connection (58b), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A40 | Positive (+) connection -1- (30), in dash panel wiring harness |
| A74 | Connection (15a, fuse 5), in dash panel wiring harness |
| V32 | Positive (+) connection (30), in telephone wiring harness |
| V51 | Positive (+) connection (15a), in telephone wiring harness |
| E264 | Telematics operating unit |
| E275 | Breakdown help button |
| E276 | Emergency call button |
| F4 | Reversing light switch |
| J234 | Airbag control unit |
| J526 | Telephone/telematics control unit |
| R91 | Additional loudspeaker for telematics |
| T2f | 2-pin connector, black, on additional loudspeaker for telematics |
| T3au | 3-pin connector, red, connector point, electronics box, plenum chamber |
| T10an | 10-pin connector, yellow, right connector point, A pillar |
| T10at | 10-pin connector, red, right connector point, A pillar |
| T10au | 10-pin connector, brown, in centre console |
| T46 | 46-pin connector, black, on telephone/telematics control unit |
| 135 | Earth connection -2-, in dash panel wiring harness |
| A87 | Connection (RF (reversing light)), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| J401 | Navigation system with CD drive control unit |
| J402 | Operating electronics control unit, navigation |
| J507 | Control unit for voice control |
| J526 | Telephone/telematics control unit |
| R | Radio |
| R39 | Telephone/navigation systems loudspeaker |
| T6n | 6-pin connector, green, at A pillar, left |
| T8a | 8-pin connector, black, radio connector III |
| T10i | 10-pin connector, black, in centre console |
| T10af | 10-pin connector, red, radio connector IV |
| T15n | 15-pin connector, brown, in centre console |
| T15p | 15-pin connector, red, behind dash panel, left |
| T20b | 20-pin connector, black, radio connector I |
| T20c | 20-pin connector, black, on navigation control unit |
| A129 | Connection (muting), in dash panel wiring harness |
| * | Only models without radio / navigation system |
| ** | Only models with radio |
| *** | Only models with navigation system |
| **** | Only models with radio navigation system |
| J189 | Auto-check system |
| J285 | Control unit with display in dash panel insert |
| J453 | Multi-function steering wheel control unit |
| J526 | Telephone/telematics control unit |
| T10au | 10-pin connector, brown, in centre console |
| T15n | 15-pin connector, brown, in centre console |
| T16 | 16-pin connector, black, diagnostic connector |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| T32b | 32-pin connector, grey, on dash panel insert |
| T46 | 46-pin connector, black, on telephone/telematics control unit |
| A60 | Connection (vehicle speed signal), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| B229 | Connection (high bus), in interior wiring harness |
| B230 | Connection (low bus), in interior wiring harness |
| * | Only models with multi-function steering wheel and telematics |
| E272 | Function selection switch II |
| J189 | Auto-check system |
| J285 | Control unit with display in dash panel insert |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32b | 32-pin connector, grey, on dash panel insert |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| A19 | Connection (58d), in dash panel wiring harness |
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