Wiring Diagram AUDI A3 2005 - Headlights with gas discharge lamps - fuse box - bulb monitoring device

| E1 | Lighting switch |
| E4 | Headlight dipper/flasher switch |
| J124 | Bulb monitoring device, rear |
| J343 | Left gas discharge lamp control unit |
| J344 | Right gas discharge lamp control unit |
| L13 | Left gas discharge lamp |
| L14 | Right gas discharge lamp |
| M1 | Side light bulb, left |
| M3 | Side light bulb, right |
| M30 | Main beam bulb, left |
| M32 | Main beam bulb, right |
| S18 | Fuse in fuse box/relay plate |
| S19 | Fuse in fuse box/relay plate |
| S20 | Fuse in fuse box/relay plate |
| S21 | Fuse in fuse box/relay plate |
| T4j | 4-pin connector, headlight, left |
| T4l | 4-pin connector, headlight, right |
| 280 | Earth connection, in communication systems wiring harness |
| A51 | Connection (56), in dash panel wiring harness |
| A103 | Connection -2- (56), in dash panel wiring harness |
| B142 | Positive (+) connection -2- (56a), in interior wiring harness |
| B143 | Positive (+) connection (58R), in interior wiring harness |
| B144 | Positive (+) connection (58L), in interior wiring harness |
| * | With bulb monitoring device |
| ** | Without bulb monitoring device |
Wiring Diagram AUDI A3 2005 - Control unit for headlight range control - vehicle level senders - headlight range control motors
| G76 | Vehicle level sender, rear left |
| G78 | Vehicle level sender, front left |
| J218 | Combi-processor in dash panel insert |
| J431 | Headlight range control, control unit |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| V48 | Headlight range control motor, left |
| V49 | Headlight range control motor, right |
| 288 | Earth connection (headlight range control), in dash panel wiring harness |
| A23 | Connection (30al), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A108 | Connection (speed signal), in dash panel wiring harness |
| A114 | Connection (headlight range control), in dash panel wiring harness |
Wiring Diagram AUDI A3 2005 - Headlight washer system
| D | Ignition/starter switch |
| E1 | Lighting switch |
| J31 | Automatic intermittent wash/wipe relay |
| J218 | Combi-processor in dash panel insert |
| S11 | Fuse in fuse box/relay plate |
| S22 | Fuse in fuse box/relay plate |
| S223 | Fuse in fuse box |
| S233 | Fuse in fuse box |
| T32 | 32-pin connector, blue, on dash panel insert |
| V | Windscreen wiper motor |
| V11 | Headlight washer system pump |
| 249 | Earth connection -2-, in interior wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A23 | Connection (30al), in dash panel wiring harness |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
| B156 | Positive (+) connection (30a), in interior wiring harness |
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