Wiring Diagram AUDI A3 2005 - Radio Bose sound system
| D | Ignition/starter switch |
| J218 | Combi-processor in dash panel insert |
| R | Radio |
| R11 | Aerial |
| T8 | 8-pin connector, on radio |
| T10k | 10-pin connector, red, on radio |
| T16 | 16-pin connector, black, centre console compartment |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 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 |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| B116 | Connection (58d), in interior wiring harness |
| B135 | Connection -1- (15a), in interior wiring harness |
| B145 | Positive (+) connection (58b), in interior wiring harness |
| * | Only models with navigation system |
Wiring Diagram AUDI A3 2005 - Radio Bose sound system
| R | Radio |
| R12 | Amplifier |
| R39 | Loudspeaker for telephone |
| R44 | Amplifier with bass loudspeaker (luggage compartment, left) |
| T6h | 6-pin connector, yellow, on radio |
| T8a | 8-pin connector, brown, on radio |
| 255 | Earth connection -1-, in radio wiring harness |
| V3 | Connection (NF), in rear speaker wiring harness |
| * | Only models with telephone |
Wiring Diagram AUDI A3 2005 - Radio Bose sound system
| 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 |
| R34 | Middle-treble tone loudspeaker, rear left |
| R35 | Middle-treble tone loudspeaker, rear right |
| T2x | 2-pin connector, on loudspeaker rear left |
| T2y | 2-pin connector, on loudspeaker rear left |
| T5d | 5-pin connector, black, in driver's door |
| T5e | 5-pin connector, black, in front passenger's door |
| T6h | 6-pin connector, yellow, on radio |
| T10q | 10-pin connector, green, connector carrier, A pillar, left |
| T10r | 10-pin connector, green, connector carrier, A pillar, right |
Wiring Diagram AUDI A3 2005 - Radio Bose sound system
| J189 | Auto-check system |
| R | Radio |
| R41 | CD changer |
| T1 | Single connector, brown, on radio |
| T6k | 6-pin connector, on radio |
| T8c | 8-pin connector, blue, on radio |
| T20 | 20-pin connector, black, on dash panel insert |
| V94 | Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system |
| 42 | Earth point, next to steering columm |
| 255 | Earth connection -1-, in radio wiring harness |
| * | Only models with CD changer |
| ** | Only models with anti-theft alarm system |
| *** | Only models with driver information system |
Wiring Diagram AUDI A3 2005 - Radio Bose sound system
| J402 | Operating electronics control unit, navigation |
| J412 | Operating electronics control unit, telephone |
| R | Radio |
| R36 | Telephone transmitter and receiver unit |
| T6k | 6-pin connector, on radio |
| T8 | 8-pin connector, on radio |
| T10k | 10-pin connector, red, on radio |
| T26 | 26-pin connector, on operating electronics control unit, navigation |
| A46 | Positive (+) connection (30 - from radio), in dash panel wiring harness |
| V15 | Connection, in telephone wiring harness |
| * | Only models with navigation system |
| ** | Only models with mobile telephone |
| *** | Only models with telephone |
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