Wiring Diagram VW CADDY 2003 - Operating electronics control unit - telephone - radio/telephone loudspeaker switch–over relay - bass loudspeaker - front left
| D | Ignition/starter switch |
| E3 | Hazard warning light switch |
| J412 | Operating electronics control unit, telephone |
| J417 | Radio/telephone loudspeaker switch-over relay |
| R | Radio |
| R21 | Bass loudspeaker, front left |
| S16 | Fuse in fuse box/relay plate |
| S21 | Fuse in fuse box/relay plate |
| T8d | 8-pin connector, radio connector lll |
| T8e | 8-pin connector, radio connector ll |
| T18a | 18-pin connector, on operating electronics control unit, telephone |
| 81 | Earth connection -1-, in dash panel wiring harness |
| B111 | Positive (+) connection -1- (30a), in interior wiring harness |
| V38 | Connection (muting), in DSP/telephone wiring harness |
Wiring Diagram VW CADDY 2003 - Operating electronics control unit - telephone microphone - radio/telephone aerial
| J412 | Operating electronics control unit, telephone |
| R | Radio |
| R38 | Telephone microphone |
| R51 | Radio/telephone aerial |
| R54 | Mobile telephone |
| T2x | 2-pin connector, behind dash panel, left |
| T13 | 13-pin connector |
| T18a | 18-pin connector, on operating electronics control unit, telephone |
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