Wiring Diagram AUDI A2 2003 - Telephone microphone - mobile phone operating electronics control unit
| D | Ignition/starter switch |
| J412 | Operating electronics control unit, mobile phone |
| R38 | Telephone microphone |
| SB25 | Fuse -25- on fuse box |
| SB38 | Fuse -38- on fuse box |
| T18 | 18-pin connector, black, mobile phone interface, in front passenger's footwell |
| 44 | Earth point, lower part of left A pillar |
| 277 | Earth connection -3-, in interior wiring harness |
| 284 | Earth connection -6-, in interior wiring harness |
| 500 | Screw connection -1- (30), on relay plate |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
| B135 | Connection -1- (15a), in interior wiring harness |
| B156 | Positive (+) connection (30a), in interior wiring harness |
Wiring Diagram AUDI A2 2003 - Navigation system with CD drive control unit - navigation operating electronics control unit - radio - telephone/navigation systems loudspeaker
| J401 | Navigation system with CD drive control unit |
| J402 | Operating electronics control unit, navigation |
| J412 | Operating electronics control unit, mobile phone |
| R | Radio |
| R39 | Telephone/navigation systems loudspeaker |
| T8a | 8-pin connector, black, radio connector III |
| T10d | 10-pin connector, red, radio connector IV |
| T18 | 18-pin connector, black, mobile phone interface, in front passenger's footwell |
| T20 | 20-pin connector, black, radio connector I |
| T20e | 20-pin connector, black, navigation system with CD drive control unit |
| A129 | Connection (muting), in dash panel wiring harness |
| * | Only applies to models with provision for radio (not factory-fitted radios) |
| ** | Only applies to models with radio Chorus, Concert or Symphony |
| *** | Only applies to models with navigation system 'NS Low' |
| **** | Only applies to models with radio navigation system (RNS-D) |
Wiring Diagram AUDI A2 2003 - Mobile phone operating electronics control unit - mobile telephone
| J412 | Operating electronics control unit, mobile phone |
| R54 | Mobile telephone |
Wiring Diagram AUDI A2 2003 - Mobile phone operating electronics control unit - telephone aerial - aerial amplifier for mobile phone
| E1 | Lighting switch |
| J285 | Control unit with display in dash panel insert |
| J412 | Operating electronics control unit, mobile phone |
| R1 | Aerial connection |
| R54 | Mobile telephone |
| R65 | Telephone aerial |
| R86 | Aerial amplifier, mobile telephone |
| T18 | 18-pin connector, black, mobile phone interface, in front passenger's footwell |
| T32 | 32-pin connector, blue, on dash panel insert |
| 277 | Earth connection -3-, in interior wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| B145 | Positive (+) connection (58b), in interior wiring harness |
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