| J519 | Onboard supply control unit |
| L22 | Left fog light bulb |
| L23 | Right fog light bulb |
| M1 | Left side light bulb |
| M5 | Front left turn signal bulb |
| M29 | Left headlight dipped beam bulb |
| M30 | Left headlight main beam bulb |
| SB35 | Fuse 35 on fuse holder B |
| T6a | 6-pin connector, black |
| T6d | 6-pin connector, blue |
| T6e | 6-pin connector, brown |
| T14 | 14-pin connector, black, right front end |
| T14b | 14-pin connector, black, on left headlight |
| V48 | Left headlight range control motor |
| 375 | Earth connection 10, in main wiring harness |
| 379 | Earth connection 14, in main wiring harness |
| 640 | Earth point 2, left in engine compartment |
| B285 | Connection 9 (15a), in main wiring harness |
| B471 | Connection 7, in main wiring harness |
| B478 | Connection 14, in main wiring harness |
| B480 | Connection 16, in main wiring harness |
| B482 | Connection 18, in main wiring harness |
| * | From November 2003 |
| E20 | Switch and instrument illumination regulator |
| E102 | Headlight range control regulator |
| J519 | Onboard supply control unit |
| M3 | Right side light bulb |
| M7 | Front right turn signal bulb |
| M31 | Right headlight dipped beam bulb |
| M32 | Right headlight main beam bulb |
| SB54 | Fuse 54 on fuse holder B |
| SC17 | Fuse 17 on fuse holder C |
| T6d | 6-pin connector, blue |
| T6f | 6-pin connector, blue |
| T14a | 14-pin connector, on right headlight |
| T18 | 18-pin connector, black |
| V49 | Right headlight range control motor |
| 383 | Earth connection 18, in main wiring harness |
| 644 | Earth point 4, on right in engine compartment |
| B285 | Connection 9 (15a), in main wiring harness |
| B340 | Connection 1 (58d), in main wiring harness |
| B471 | Connection 7, in main wiring harness |
| B477 | Connection 13, in main wiring harness |
| B480 | Connection 16, in main wiring harness |
| E326 | Front interior light button |
| E457 | Driver side reading light button |
| E458 | Front passenger side reading light button |
| J519 | Onboard supply control unit |
| T6c | 6-pin connector, white |
| T10l | 10-pin connector, red, near front interior light |
| W1 | Front interior light |
| W13 | Front passenger reading light |
| W19 | Driver side reading light |
| Y7 | Automatic anti-dazzle interior mirror |
| 378 | Earth connection 13, in main wiring harness |
| 639 | Earth point, left A-pillar |
| A19 | Connection (58d), in dash panel wiring harness |
| B320 | Connection 6 (30a), in main wiring harness |
| B481 | Connection 17, in main wiring harness |
| R5 | Connection 2, in interior light wiring harness |
| * | From November 2003 |
| E316 | Glove compartment button |
| F335 | Storage compartment illumination switch |
| J144 | Interior light switch-off delay blocking diode |
| J519 | Onboard supply control unit |
| L120 | Storage compartment illumination bulb |
| T4i | 4-pin connector |
| T6r | 6-pin connector, brown |
| T10l | 10-pin connector, red, near front interior light |
| T26a | 26-pin connector, white |
| W6 | Glove compartment light |
| W11 | Rear left reading light |
| W12 | Rear right reading light |
| W14 | Front passenger side illuminated vanity mirror |
| W20 | Driver side illuminated vanity mirror |
| W27 | Engine compartment light |
| 33 | Earth point, on right behind dash panel |
| 163 | Earth connection 2, in interior light wiring harness |
| 378 | Earth connection 13, in main wiring harness |
| 390 | Earth connection 25, in main wiring harness |
| B320 | Connection 6 (30a), in main wiring harness |
| B340 | Connection 1 (58d), in main wiring harness |
| B487 | Connection 23, in main wiring harness |
| R5 | Connection 2, in interior light wiring harness |
| R6 | Positive connection 1, in interior light wiring harness |
| R68 | Connection (58d), in interior light wiring harness |
| * | From November 2003 |
| J519 | Onboard supply control unit |
| L67 | Illumination for vent on left of dash panel |
| L68 | Illumination for vent in centre of dash panel |
| L69 | Illumination for vent on right of dash panel |
| L87 | Illumination for vent in centre of passenger compartment |
| L88 | Illumination for vent on left of passenger compartment |
| L89 | Illumination for vent on right of passenger compartment |
| T6c | 6-pin connector, white |
| T16p | 16-pin connector, black |
| 32 | Earth point behind dash panel on left |
| 33 | Earth point behind dash panel on right |
| 366 | Earth connection 1, in main wiring harness |
| 373 | Earth connection 8, in main wiring harness |
| 374 | Earth connection 9, in main wiring harness |
| 382 | Earth connection 17, in main wiring harness |
| 387 | Earth connection 22, in main wiring harness |
| 388 | Earth connection 23, in main wiring harness |
| 631 | Earth point, rear right door |
| 632 | Earth point, rear left door |
| A116 | Connection 2 (58d), in dash panel wiring harness |
| B340 | Connection 1 (58d), in main wiring harness |
| B341 | Connection 2 (58d), in main wiring harness |
| * | Only on V10 TDI |
| J519 | Onboard supply control unit |
| L28 | Cigarette lighter illumination bulb |
| SB1 | Fuse 1 on fuse holder B |
| SB28 | Fuse 28 on fuse holder B |
| T6r | 6-pin connector, brown |
| U1 | Cigarette lighter |
| U9 | Rear cigarette lighter |
| 32 | Earth point behind dash panel on left |
| 33 | Earth point behind dash panel on right |
| 391 | Earth connection 26, in main wiring harness |
| 395 | Earth connection 30, in main wiring harness |
| A116 | Connection 2 (58d), in dash panel wiring harness |
| B557 | Connection 21 (30a), in main wiring harness |
| * | Only models with no second battery, from November 2005 |
| ** | Depends on equipment |
| J519 | Onboard supply control unit |
| L42 | Socket illumination bulb |
| SB3 | Fuse 3 on fuse holder B |
| SB5 | Fuse 5 on fuse holder B |
| SB29 | Fuse 29 on fuse holder B |
| SB30 | Fuse 30 on fuse holder B |
| T6r | 6-pin connector |
| U5 | 12 V socket, front of centre console |
| U18 | 12 V socket 2, front of centre console |
| U19 | 12 V socket 3, in luggage compartment on right |
| U20 | 12 V socket 4, in luggage compartment on right |
| 51 | Earth point, on right in luggage compartment |
| 396 | Earth connection 31, in main wiring harness |
| 638 | Earth point, right A-pillar |
| B326 | Connection 12 (30a), in main wiring harness |
| B327 | Connection 13 (30a), in main wiring harness |
| * | Only models with no second battery, from November 2005 |
| ** | Depends on equipment |
| E3 | Hazard warning light switch |
| F4 | Reversing light switch |
| J217 | Automatic gearbox control unit |
| J519 | Onboard supply control unit |
| K6 | Hazard warning light system warning lamp |
| SC43 | Fuse 43 on fuse holder C |
| T5h | 5-pin connector |
| T16p | 16-pin connector, black |
| T18 | 18-pin connector, black |
| T26a | 26-pin connector, white |
| T52 | 52-pin connector |
| Y7 | Automatic anti-dazzle interior mirror |
| 32 | Earth point behind dash panel on left |
| 370 | Earth connection 5, in main wiring harness |
| 376 | Earth connection 11, in main wiring harness |
| 377 | Earth connection 12, in main wiring harness |
| A116 | Connection 2 (58d), in dash panel wiring harness |
| B483 | Connection 19, in main wiring harness |
| * | Only models with manual gearbox |
| --- | Only models with automatic gearbox |
| F120 | Anti-theft alarm and vermin repellent system contact switch |
| H2 | Treble horn |
| H7 | Bass horn |
| J519 | Onboard supply control unit |
| L106 | Rear left footwell illumination bulb |
| L107 | Rear right footwell illumination bulb |
| L151 | Front left footwell illumination bulb |
| L152 | Front right footwell illumination bulb |
| T4b | 4-pin connector |
| T6c | 6-pin connector |
| T10 | 10-pin connector, black, coupling point, left front end |
| T10n | 10-pin connector, black, front right seat |
| T10p | 10-pin connector, black, front left seat |
| 35 | Earth point, under front passenger seat |
| 129 | Earth connection, in dual tone horn wiring harness |
| 376 | Earth connection 11, in main wiring harness |
| 380 | Earth connection 15, in main wiring harness |
| 381 | Earth connection 16, in main wiring harness |
| 384 | Earth connection 19, in main wiring harness |
| 632 | Earth point, rear left door |
| 638 | Earth point, right A-pillar |
| 640 | Earth point, left in engine compartment |
| B479 | Connection 15, in main wiring harness |
| C13 | Positive connection in dual tone horn wiring harness |
| G397 | Rain and light detection sensor |
| J39 | Headlight washer system relay |
| J519 | Onboard supply control unit |
| R | Radio |
| SB7 | Fuse 7 on fuse holder B |
| SB8 | Fuse 8 on fuse holder B |
| SB18 | Fuse 18 on fuse holder B |
| T6c | 6-pin connector |
| T6n | 6-pin connector, black |
| T6q | 6-pin connector |
| T6r | 6-pin connector |
| T10a | 10-pin connector |
| T16e | 16-pin connector |
| T18 | 18-pin connector |
| V | Windscreen wiper motor |
| V11 | Headlight washer system pump |
| V59 | Windscreen and rear window washer pump |
| 385 | Earth connection 20, in main wiring harness |
| 389 | Earth connection 24, in main wiring harness |
| 392 | Earth connection 27, in main wiring harness |
| 608 | Earth point, central in plenum chamber |
| 639 | Earth point, left A-pillar |
| 644 | Earth point, on right in engine compartment |
| B321 | Connection 7 (30a), in main wiring harness |
| B415 | Connection 1 (infotainment CAN bus, high), in main wiring harness |
| B421 | Connection 1 (infotainment CAN bus, low), in main wiring harness |
| * | From May 2005 |
| F321 | Parking brake contact switch |
| G17 | Ambient temperature sensor |
| G32 | Coolant shortage indicator sender |
| G33 | Windscreen washer fluid level sender |
| J104 | ABS with ESP control unit |
| J285 | Control unit in dash panel insert |
| J519 | Onboard supply control unit |
| SB26 | Fuse 26 on fuse holder B |
| SB40 | Fuse 40 on fuse holder B |
| SB51 | Fuse 51 on fuse holder B |
| T6n | 6-pin connector, black |
| T10 | 10-pin connector, black, left front end |
| T26a | 26-pin connector, white |
| T32a | 32-pin connector, blue |
| T32b | 32-pin connector, green |
| 371 | Earth connection 6, in main wiring harness |
| 410 | Earth connection 1 (sender earth), in main wiring harness |
| B277 | Connection 1 (15a), in main wiring harness |
| B278 | Connection 2 (15a), in main wiring harness |
| B280 | Connection 4 (15a), in main wiring harness |
| B315 | Connection 1 (30a), in main wiring harness |
| B432 | Connection (foot operated parking brake), in main wiring harness |
| * | Only models with automatic gearbox |
| ** | Only models with manual gearbox |
| *** | From November 2003 |
| C | Alternator |
| F34 | Brake fluid level warning contact |
| J285 | Control unit in dash panel insert |
| J518 | Entry and start authorisation control unit |
| J519 | Onboard supply control unit |
| J533 | Data bus diagnostic interface |
| K | Dash panel insert |
| SB34 | Fuse 34 on fuse holder B |
| T10f | 10-pin connector, red, E-box in engine compartment |
| T16b | 16-pin connector, self-diagnosis connection |
| T18 | 18-pin connector, on onboard supply control unit |
| T26a | 26-pin connector, on onboard supply control unit |
| T32a | 32-pin connector, blue, on dash panel insert |
| T32b | 32-pin connector, green, on dash panel insert |
| T81 | 81-pin connector, on entry and start authorisation control unit |
| 371 | Earth connection 6, in main wiring harness |
| B328 | Connection 14 (30a), in main wiring harness |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| B444 | Connection 1 (diagnosis), in main wiring harness |
| B449 | Connection (emergency running), in main wiring harness |
| * | Only on V10 TDI |
| ** | From November 2003 |
| E | Windscreen wiper switch |
| E2 | Turn signal switch |
| E4 | Headlight dipper and flasher switch |
| E19 | Parking light switch |
| E22 | Intermittent wiper switch |
| E34 | Rear wiper switch |
| E38 | Intermittent wipe regulator |
| F138 | Airbag coil connector and return ring with slip ring |
| H | Horn plate |
| J527 | Steering column electronics control unit |
| SB33 | Fuse 33 on fuse holder B |
| T16a | 16-pin connector |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| J393 | Convenience system central control unit |
| J419 | Brake light additional relay |
| SC31 | Fuse 31 on fuse holder C |
| T12b | 12-pin connector |
| T23 | 23-pin connector |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B402 | Connection 6 (convenience CAN bus, high), in main wiring harness |
| B403 | Connection 7 (convenience CAN bus, high), in main wiring harness |
| B404 | Connection 8 (convenience CAN bus, high), in main wiring harness |
| B405 | Connection 9 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| B411 | Connection 6 (convenience CAN bus, low), in main wiring harness |
| B412 | Connection 7 (convenience CAN bus, low), in main wiring harness |
| B413 | Connection 8 (convenience CAN bus, low), in main wiring harness |
| B414 | Connection 9 (convenience CAN bus, low), in main wiring harness |
| B444 | Connection 1 (diagnosis), in main wiring harness |
| B445 | Connection 2 (diagnosis), in main wiring harness |
| B485 | Connection 21, in main wiring harness |
| J393 | Convenience system central control unit |
| L46 | Rear left fog light bulb |
| M6 | Rear left turn signal bulb |
| M16 | Left reversing light bulb |
| M21 | Left brake and tail light bulb |
| M49 | Left tail light 2 bulb |
| SC14 | Fuse 14 on fuse holder C |
| T10ab | 10-pin connector, pink, coupling point on left of rear lid |
| T12b | 12-pin connector |
| T12c | 12-pin connector |
| T23 | 23-pin connector |
| X4 | Left number plate light |
| X5 | Right number plate light |
| 50 | Earth point, on left in luggage compartment |
| 219 | Earth connection 2, in rear lid wiring harness |
| 393 | Earth connection 28, in main wiring harness |
| 394 | Earth connection 29, in main wiring harness |
| 398 | Earth connection 33, in main wiring harness |
| B475 | Connection 11, in main wiring harness |
| W11 | Connection (58), in rear lid wiring harness |
| * | Only models with no exterior spare wheel |
| ** | From November 2003 |
| J393 | Convenience system central control unit |
| M8 | Rear right turn signal bulb |
| M17 | Right reversing light bulb |
| M22 | Right brake and tail light bulb |
| M50 | Right tail light 2 bulb |
| SB15 | Fuse 15 on fuse holder B |
| T10y | 10-pin connector, blue, coupling point for right side of rear lid |
| T12b | 12-pin connector |
| T12c | 12-pin connector |
| T23 | 23-pin connector |
| 51 | Earth point, on right in luggage compartment |
| 218 | Earth connection 1, in rear lid wiring harness |
| 372 | Earth connection 7, in main wiring harness |
| 398 | Earth connection 33, in main wiring harness |
| B476 | Connection 12, in main wiring harness |
| B484 | Connection 20, in main wiring harness |
| C10 | Suppression filter |
| J9 | Heated rear window relay |
| J393 | Convenience system central control unit |
| M25 | High level brake light bulb |
| SB39 | Fuse 39 on fuse holder B |
| SB52 | Fuse 52 on fuse holder B |
| SC16 | Fuse 16 on fuse holder C |
| SC18 | Fuse 18 on fuse holder C |
| T6as | 6-pin connector, green, right rear window |
| T10ab | 10-pin connector, pink, left in rear lid |
| T10y | 10-pin connector, blue, right of rear lid |
| T12b | 12-pin connector |
| T12c | 12-pin connector |
| T23 | 23-pin connector |
| V12 | Rear window wiper motor |
| W3 | Luggage compartment light |
| W51 | Rear lid light |
| Z1 | Heated rear window |
| 667 | Earth point, on rear left of roof |
| B330 | Connection 16 (30a), in main wiring harness |
| B447 | Connection (luggage compartment light), in main wiring harness |
| Q44 | Connection 2, in rear lid wiring harness |
| B558 | Connection 22 (30a), in main wiring harness |
| * | From November 2003 |
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