| D | Ignition/starter switch |
| J402 | Operating electronics control unit, navigation |
| S5 | Fuse in fuse box |
| S231 | Fuse 31 in fuse box |
| S237 | Fuse 37 in fuse box |
| T8a | 8-pin connector, black, radio connector III |
| T10i | 10-pin connector, black, in centre console |
| T26b | 26-pin connector, on operating electronics control unit, navigation |
| 36 | Earth point, near handbrake lever |
| 255 | Earth connection -1-, in radio wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A21 | Connection (86s), in dash panel wiring harness |
| A57 | Positive (+) connection -3- (30), in dash panel wiring harness |
| A70 | Connection (15a, fuse 231), in dash panel wiring harness |
| A74 | Connection (15a, fuse 5), in dash panel wiring harness |
| * | Active loudspeakers (saloon models) |
| ** | Active loudspeakers (Avant models) |
| *** | Bose sound system (saloon models) |
| **** | Bose sound system (Avant models) |
| # | Bose sound system (Avant models), without CD changer |
| ## | Active loudspeakers (saloon models), without CD changer |
| F4 | Reversing light switch |
| F125 | Multi-function switch |
| J104 | ABS with EDL control unit |
| J218 | Combi-processor in dash panel insert |
| J402 | Operating electronics control unit, navigation |
| T3am | 3-pin connector, brown, right connector point, A pillar |
| T3au | 3-pin connector, red, connector point, electronics box, plenum chamber |
| T8a | 8-pin connector, black, radio connector III |
| T10ap | 10-pin connector, grey, right connector point, A pillar |
| T16 | 16-pin connector, diagnostic connector |
| T26b | 26-pin connector, on operating electronics control unit, navigation |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| A19 | Connection (58d), in dash panel wiring harness |
| A60 | Connection (vehicle speed signal), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A87 | Connection (RF (reversing light)), in dash panel wiring harness |
| A127 | Connection (rear left speed sensor), in dash panel wiring harness |
| A128 | Connection (rear right speed sensor), in dash panel wiring harness |
| * | Only models with automatic gearbox |
| ** | Only models with manual gearbox |
| J334 | Immobilizer control unit |
| J402 | Operating electronics control unit, navigation |
| T8a | 8-pin connector, black, radio connector III |
| T10i | 10-pin connector, black, in centre console |
| T15n | 15-pin connector, brown, in centre console |
| T20b | 20-pin connector, black, radio connector I |
| * | See applicable Current Flow Diagram: Telephone/telematics |
| ** | Only models with anti-theft alarm system |
| J402 | Operating electronics control unit, navigation |
| R41 | CD changer |
| T2ae | 2-pin connector, black, in centre console |
| T20b | 20-pin connector, black, radio connector I |
| 135 | Earth connection -2-, in dash panel wiring harness |
| 255 | Earth connection -1-, in radio wiring harness |
| V14 | Connection (screening), in CD changer wiring harness |
| * | Models with CD changer |
| J402 | Operating electronics control unit, navigation |
| R21 | Bass loudspeaker, front left |
| R23 | Bass loudspeaker, front right |
| R26 | Middle-high tone loudspeaker, front left |
| R27 | Middle-high tone loudspeaker, front right |
| R50 | Navigation aerial (GPS) |
| T6n | 6-pin connector, green, at A pillar, left |
| T6u | 6-pin connector, green, at A pillar, right |
| T8b | 8-pin connector, brown, radio connector II |
| J402 | Operating electronics control unit, navigation |
| R15 | Bass loudspeaker, rear left |
| R17 | Bass loudspeaker, rear right |
| R34 | Middle-treble tone loudspeaker, rear left |
| R35 | Middle-treble tone loudspeaker, rear right |
| T20b | 20-pin connector, black, radio connector I |
| 36 | Earth point, near handbrake lever |
| 255 | Earth connection -1-, in radio wiring harness |
| * | Only models with CD changer |
| ** | Only models without CD changer |
| J402 | Operating electronics control unit, navigation |
| R15 | Bass loudspeaker, rear left |
| R17 | Bass loudspeaker, rear right |
| R34 | Middle-treble tone loudspeaker, rear left |
| R35 | Middle-treble tone loudspeaker, rear right |
| R44 | Amplifier with bass loudspeaker (luggage compartment, left) |
| T3ac | 3-pin connector, yellow, at B pillar, right |
| T3ad | 3-pin connector, yellow, at B pillar, left |
| T3ae | 3-pin connector, black, in door, rear right |
| T3af | 3-pin connector, black, in door, rear left |
| T20b | 20-pin connector, black, radio connector I |
| T10w | 10-pin connector, red, luggage compartment, left |
| 133 | Earth connection, in loudspeaker wiring harness |
| 255 | Earth connection -1-, in radio wiring harness |
| J402 | Operating electronics control unit, navigation |
| R12 | Amplifier |
| R21 | Bass loudspeaker, front left |
| R23 | Bass loudspeaker, front right |
| R26 | Middle-high tone loudspeaker, front left |
| R27 | Middle-high tone loudspeaker, front right |
| T6n | 6-pin connector, green, at A pillar, left |
| T6u | 6-pin connector, green, at A pillar, right |
| T20b | 20-pin connector, black, radio connector I |
| 133 | Earth connection, in loudspeaker wiring harness |
| 255 | Earth connection -1-, in radio wiring harness |
| J402 | Operating electronics control unit, navigation |
| R2 | Telephone/navigation systems loudspeaker, front left |
| R39 | Telephone/navigation systems loudspeaker, front right |
| R12 | Amplifier |
| R15 | Bass loudspeaker, rear left |
| R17 | Bass loudspeaker, rear right |
| R34 | Middle-treble tone loudspeaker, rear left |
| R35 | Middle-treble tone loudspeaker, rear right |
| T3ac | 3-pin connector, yellow, at B pillar, right |
| T3ad | 3-pin connector, yellow, at B pillar, left |
| T3ae | 3-pin connector, black, in door, rear right |
| T3af | 3-pin connector, black, in door, rear left |
| T6n | 6-pin connector, green, at A pillar, left |
| T6u | 6-pin connector, green, at A pillar, right |
| T8b | 8-pin connector, brown, radio connector II |
| * | Only models with telephone |
| J402 | Operating electronics control unit, navigation |
| R21 | Bass loudspeaker, front left |
| R23 | Bass loudspeaker, front right |
| R26 | Middle-high tone loudspeaker, front left |
| R27 | Middle-high tone loudspeaker, front right |
| R44 | Amplifier with bass loudspeaker (luggage compartment, left) |
| T6n | 6-pin connector, green, at A pillar, left |
| T6u | 6-pin connector, green, at A pillar, right |
| T20b | 20-pin connector, black, radio connector I |
| 36 | Earth point, near handbrake lever |
| 255 | Earth connection -1-, in radio wiring harness |
| V3 | Connection (audio frequency, NF), in rear loudspeaker wiring harness |
| * | Only models without CD changer |
| ** | Only models with CD changer |
| J402 | Operating electronics control unit, navigation |
| R2 | Loudspeaker, front left |
| R3 | Loudspeaker, front right |
| R15 | Bass loudspeaker, rear left |
| R17 | Bass loudspeaker, rear right |
| R34 | Middle-treble tone loudspeaker, rear left |
| R35 | Middle-treble tone loudspeaker, rear right |
| R44 | Amplifier with bass loudspeaker (luggage compartment, left) |
| T3ac | 3-pin connector, yellow, at B pillar, right |
| T3ad | 3-pin connector, yellow, at B pillar, left |
| T3ae | 3-pin connector, black, in door, rear right |
| T3af | 3-pin connector, black, in door, rear left |
| T6n | 6-pin connector, green, at A pillar, left |
| T6u | 6-pin connector, green, at A pillar, right |
| T8b | 8-pin connector, brown, radio connector II |
| * | Only models with telephone |
| J189 | Auto-check system |
| J402 | Operating electronics control unit, navigation |
| J415 | Navigation/TV tuner |
| J515 | Aerial selection control unit |
| R1 | Aerial connection |
| R94 | Navigation interface |
| T6at | 6-pin connector, white, on TV tuner |
| T10as | 10-pin connector, red, behind dash panel, left |
| T26b | 26-pin connector, on operating electronics control unit, navigation |
| T32b | 32-pin connector, grey, on dash panel insert |
| 135 | Earth connection -2-, in dash panel wiring harness |
| 266 | Earth connection, in navigation wiring harness |
| B229 | Connection (high bus), in interior wiring harness |
| B230 | Connection (low bus), in interior wiring harness |
| V22 | Positive (+) connection (30a), in navigation wiring harness |
| * | Only models with TV receiver |
| ** | Only models without TV receiver |
| *** | Does not apply to Avant models |
| E15 | Heated rear window switch |
| J9 | Heated rear window relay |
| J515 | Aerial selection control unit |
| R1 | Aerial connection |
| R11 | Aerial |
| R18 | Frequency switch, left |
| R19 | Frequency switch, right |
| R24 | Aerial amplifier |
| R55 | TV aerial 1 |
| R56 | TV aerial 2 |
| R57 | TV aerial 3 |
| R58 | TV aerial 4 |
| R82 | Aerial amplifier 1, TV |
| R83 | Aerial amplifier 2, TV |
| R84 | Aerial amplifier 3, TV |
| T6e | 6-pin connector, blue, left connector point, A pillar |
| Z1 | Heated rear window |
| Z24 | Heated rear window with window aerial |
| 266 | Earth connection, in navigation wiring harness |
| * | Only models with air conditioner |
| ** | Models without air conditioner |
| E15 | Heated rear window switch |
| J9 | Heated rear window relay |
| J415 | Navigation/TV tuner |
| J515 | Aerial selection control unit |
| R1 | Aerial connection |
| R11 | Aerial |
| R18 | Frequency switch, left |
| R19 | Frequency switch, right |
| R24 | Aerial amplifier |
| R55 | TV aerial 1 |
| R56 | TV aerial 2 |
| R57 | TV aerial 3 |
| R58 | TV aerial 4 |
| R82 | Aerial amplifier 1, TV |
| R83 | Aerial amplifier 2, TV |
| R84 | Aerial amplifier 3, TV |
| R85 | Aerial amplifier 4, TV |
| T6e | 6-pin connector, blue, left connector point, A pillar |
| T8f | 8-pin connector, brown, in luggage compartment, rear left |
| Z1 | Heated rear window |
| Z24 | Heated rear window with window aerial |
| 218 | Earth connection -1-, in tailgate wiring harness |
| 266 | Earth connection, in navigation wiring harness |
| * | Only models with air conditioner |
| ** | Models without air conditioner |
