| D | Ignition/starter switch |
| R | Radio |
| S5 | Fuse 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 |
| T10af | 10-pin connector, red, radio connector IV |
| 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 |
| A74 | Connection (15a, fuse 5), in dash panel wiring harness |
| V21 | Positive (+) connection (30), in radio - amplifier wiring harness |
| * | Active loudspeakers (saloon models) |
| ** | Active loudspeakers (Avant models) |
| *** | Bose sound system (saloon models) |
| **** | Bose sound system (Avant models) |
| J218 | Combi-processor in dash panel insert |
| J453 | Multi-function steering wheel control unit |
| R | Radio |
| T1l | Single connector, brown, on radio |
| T8a | 8-pin connector, black, radio connector III |
| T10i | 10-pin connector, black, in centre console |
| T10af | 10-pin connector, red, radio connector IV |
| T15a | 15-pin connector, black, right connector point, A pillar |
| T16 | 16-pin connector, diagnostic connector |
| T20b | 20-pin connector, black, radio connector I |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| V94 | Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system |
| A4 | Positive (+) connection (58b), in dash panel wiring harness |
| 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 |
| * | Only models with multi-function steering wheel |
| ** | Only models with anti-theft alarm system |
| J189 | Auto-check system |
| J218 | Combi-processor in dash panel insert |
| R | Radio |
| T10i | 10-pin connector, black, in centre console |
| T20b | 20-pin connector, black, radio connector I |
| T32a | 32-pin connector, green, on dash panel insert |
| T32b | 32-pin connector, grey, on dash panel insert |
| A117 | Connection (enable), in dash panel wiring harness |
| A118 | Connection (data), in dash panel wiring harness |
| A119 | Connection (clock), in dash panel wiring harness |
| B229 | Connection (high bus), in interior wiring harness |
| B230 | Connection (low bus), in interior wiring harness |
| V41 | Connection (high bus), in communication systems wiring harness |
| V42 | Connection (low bus), in communication systems wiring harness |
| * | Only models with multi-function display |
| ** | Only models with radio Symphony and without multi-function display |
| *** | Only models with radio Symphony and with multi-function display |
| R | Radio |
| 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 |
| T8b | 8-pin connector, brown, radio connector II |
| R | Radio |
| 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 |
| 255 | Earth connection -1-, in radio wiring harness |
| R | Radio |
| 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 |
| R | Radio |
| 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 |
| R | Radio |
| R2 | Loudspeaker, front left |
| R3 | 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 |
| R | Radio |
| 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 |
| R | Radio |
| 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 |
| J401 | Navigation system with CD drive control unit |
| R | Radio |
| 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 |
| T20c | 20-pin connector, black, on navigation control unit |
| A129 | Connection (muting), in dash panel wiring harness |
| * | Only models with navigation system |
| ** | Only models with navigation system and telephone/telematics |
| *** | See applicable Current Flow Diagram: Telephone/telematics |
| E15 | Heated rear window switch |
| J9 | Heated rear window relay |
| J515 | Aerial selection control unit |
| R | Radio |
| R1 | Aerial connection |
| R24 | Aerial amplifier |
| T6e | 6-pin connector, blue, left connector point, A pillar |
| Z1 | Heated rear window |
| Z24 | Heated rear window with window aerial |
| 255 | Earth connection -1-, in radio wiring harness |
| * | Aerial for radio Chorus and Concert (saloon models) |
| ** | Aerial for radio Symphony |
| *** | Only models with air conditioner |
| **** | Models without air conditioner |
| 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 |
| R111 | Aerial amplifier -2- |
| R112 | Aerial amplifier -3- |
| R113 | Aerial amplifier -4- |
| 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 |
| * | Only models with air conditioner |
| ** | Models without air conditioner |
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