| SF1 | Fuse 1 in fuse holder F |
| SA4 | Fuse 4 in fuse holder A |
| SA6 | Fuse 6 in fuse holder A |
| SC7 | Fuse 7 on fuse holder C |
| SC13 | Fuse 13 on fuse holder C |
| SC14 | Fuse 14 on fuse holder C |
| SC15 | Fuse 15 on fuse holder C |
| SC16 | Fuse 16 on fuse holder C |
| SC22 | Fuse 22 on fuse holder C |
| SC23 | Fuse 23 on fuse holder C |
| SC32 | Fuse 32 on fuse holder C |
| T16d | 16-pin connector |
| B272 | Positive connection (30), in main wiring harness |
| B279 | Positive connection 3 (15a) in main wiring harness |
| B291 | Positive connection 15 (15a) in main wiring harness |
| B327 | Positive connection 13 (30a) in main wiring harness |
| B330 | Positive connection 16 (30a) in main wiring harness |
| B331 | Positive connection 17 (30a) in main wiring harness |
| B334 | Positive connection 20 (30a) in main wiring harness |
| B557 | Positive connection 21 (30a) in main wiring harness |
| * | Only models with stop/start system |
| *2 | Only models with 6-cylinder engine |
| *3 | According to equipment |
| *4 | Up to September 2011 |
| *5 | Wiring colour depends on equipment |
| *6 | From October 2011 |
| F266 | Bonnet contact switch |
| H2 | Treble horn |
| H7 | Bass horn |
| J4 | Dual tone horn relay |
| J519 | Onboard supply control unit |
| J532 | Voltage stabiliser |
| SB3 | Fuse 3 on fuse holder B |
| SB5 | Fuse 5 on fuse holder B |
| SB7 | Fuse 7 on fuse holder B |
| SC47 | Fuse 47 on fuse holder C |
| SC48 | Fuse 48 on fuse holder C |
| T4vw | 4-pin connector, behind right headlight |
| T12ac | 12-pin connector |
| T40 | 40-pin connector |
| T52a | 52-pin connector |
| T52b | 52-pin connector |
| 279 | Earth connection 5, in interior wiring harness |
| 396 | Earth connection 31, in main wiring harness |
| 685 | Earth point 1 at front of right longitudinal member |
| 687 | Earth point 1, on centre tunnel |
| B231 | Positive connection 5 (30a), in interior wiring harness |
| B322 | Positive connection 8 (30a) in main wiring harness |
| B465 | Connection 1, in main wiring harness |
| * | Only models with 6-cylinder engine |
| *2 | Only models with stop/start system |
| *3 | Up to September 2011 |
| *4 | From October 2011 |
| J519 | Onboard supply control unit |
| M1 | Left side light bulb |
| MX1 | Front left headlight |
| MX2 | Front right headlight |
| M3 | Right side light bulb |
| M5 | Front left turn signal bulb |
| M7 | Front right turn signal bulb |
| M29 | Left headlight dipped beam bulb |
| M30 | Left headlight main beam bulb |
| M31 | Right headlight dipped beam bulb |
| M32 | Right headlight main beam bulb |
| T10 | 10-pin connector |
| T10q | 10-pin connector |
| T52a | 52-pin connector |
| T52c | 52-pin connector |
| V48 | Left headlight range control motor |
| V49 | Right headlight range control motor |
| 371 | Earth connection 6, in main wiring harness |
| 380 | Earth connection 15, in main wiring harness |
| 673 | Earth point 3, on front of left longitudinal member |
| B282 | Positive connection 6 (15a) in main wiring harness |
| B476 | Connection 12, in main wiring harness |
| E20 | Switch and instrument illumination regulator |
| E102 | Headlight range control regulator |
| J519 | Onboard supply control unit |
| L76 | Button illumination bulb |
| T8g | 8-pin connector |
| T52a | 52-pin connector |
| T52b | 52-pin connector |
| T52c | 52-pin connector |
| 42 | Earth point, next to steering column |
| 238 | Earth connection 1, in interior wiring harness |
| 277 | Earth connection 3, in interior wiring harness |
| 380 | Earth connection 15, in main wiring harness |
| 639 | Earth point, left A-pillar |
| B282 | Positive connection 6 (15a) in main wiring harness |
| B476 | Connection 12, in main wiring harness |
| * | Wiring colour depends on equipment |
| D1 | Immobiliser reading unit |
| D9 | Electronic ignition lock |
| J519 | Onboard supply control unit |
| J527 | Steering column electronics control unit |
| J623 | Engine control unit |
| J764 | Control unit for electronic steering column lock |
| L76 | Button illumination bulb |
| N376 | Ignition key withdrawal lock solenoid |
| SB9 | Fuse 9 on fuse holder B |
| SB16 | Fuse 16 on fuse holder B |
| T10k | 10-pin connector |
| T16f | 16-pin connector |
| T16o | 16-pin connector |
| T40 | 40-pin connector |
| T52b | 52-pin connector |
| T52c | 52-pin connector |
| T94 | 94-pin connector |
| 249 | Earth connection 2, in interior wiring harness |
| B259 | Connection (start/stop signal), in interior wiring harness |
| B536 | Connection 27, in main wiring harness |
| B729 | Connection 1 (50), in main wiring harness |
| * | Only models with 6-cylinder engine |
| *2 | Up to September 2011 |
| *3 | From October 2011 |
| E2 | Turn signal switch |
| E4 | Headlight dipper and flasher switch |
| E45 | Cruise control system switch |
| E51 | Cruise control system master switch |
| E527 | Button to temporarily switch cruise control system (CCS) off |
| E595 | Steering column combination switch |
| F138 | Airbag coil connector and return ring with slip ring |
| H | Horn plate |
| J234 | Airbag control unit |
| J527 | Steering column electronics control unit |
| J623 | Engine control unit |
| N95 | Driver side airbag igniter |
| T4ae | 4-pin connector |
| T16o | 16-pin connector |
| T94 | 94-pin connector |
| T100 | 100-pin connector |
| B441 | Connection (CCS), in main wiring harness |
| * | Only models with 6-cylinder engine |
| E313 | Selector lever |
| J386 | Driver door control unit |
| J387 | Front passenger door control unit |
| J519 | Onboard supply control unit |
| J527 | Steering column electronics control unit |
| L131 | Driver side turn signal repeater bulb |
| L132 | Front passenger side turn signal repeater bulb |
| T10o | 10-pin connector |
| T16k | 16-pin connector |
| T16l | 16-pin connector |
| T16o | 16-pin connector |
| T20g | 20-pin connector |
| T20h | 20-pin connector |
| T28 | 28-pin connector, in right A-pillar coupling station |
| T28c | 28-pin connector, in left A-pillar coupling station |
| T32a | 32-pin connector |
| T32b | 32-pin connector |
| T52c | 52-pin connector |
| W30 | Driver side door warning lamp |
| W36 | Front passenger side door warning lamp |
| W52 | Driver side entry light in exterior mirror |
| W53 | Front passenger side entry light in exterior mirror |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| J285 | Control unit in dash panel insert |
| J533 | Data bus diagnostic interface |
| K | Dash panel insert |
| SB15 | Fuse 15 on fuse holder B |
| SB24 | Fuse 24 on fuse holder B |
| T16d | 16-pin connector, on diagnostic connection |
| T20e | 20-pin connector |
| T32c | 32-pin connector |
| T40 | 40-pin connector |
| B383 | Connection 1 (powertrain CAN bus, high), in main wiring harness |
| B390 | Connection 1 (powertrain CAN bus, low), 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 |
| B708 | Connection 1 (dash panel insert CAN bus high) in main wiring harness |
| B709 | Connection 1 (dash panel insert CAN bus low) in main wiring harness |
| B713 | Connection 1 (CAN bus diagnosis, high), in main wiring harness |
| B714 | Connection 1 (CAN bus diagnosis, low), in main wiring harness |
| * | Only models with 6-cylinder engine |
| F34 | Brake fluid level warning contact |
| H3 | Buzzer and gong |
| J285 | Control unit in dash panel insert |
| J540 | Control unit for electromechanical parking brake |
| K | Dash panel insert |
| K1 | Main beam warning lamp |
| K2 | Alternator warning lamp |
| K4 | Side light warning lamp |
| K13 | Rear fog light warning lamp |
| K65 | Left turn signal warning lamp |
| K94 | Right turn signal warning lamp |
| K118 | Brake system warning lamp |
| K170 | Bulb failure warning lamp |
| T30a | 30-pin connector |
| T32c | 32-pin connector |
| 400 | Earth connection 35, in main wiring harness |
| 639 | Earth point, left A-pillar |
| G3 | Coolant temperature gauge |
| G17 | Ambient temperature sensor |
| G32 | Coolant shortage indicator sender |
| G33 | Windscreen washer fluid level sender |
| J285 | Control unit in dash panel insert |
| K | Dash panel insert |
| K18 | Trailer operation warning lamp |
| K28 | Coolant temperature and coolant shortage warning lamp |
| K37 | Washer fluid level warning lamp |
| K214 | Electric parking brake and handbrake fault warning lamp |
| SB11 | Fuse 11 on fuse holder B |
| SB17 | Fuse 17 on fuse holder B |
| T4vw | 4-pin connector |
| T32c | 32-pin connector |
| T40 | 40-pin connector |
| 295 | Earth connection 10, in interior wiring harness |
| * | Only models with 6-cylinder engine |
| F | Brake light switch |
| J519 | Onboard supply control unit |
| L22 | Left fog light bulb |
| L23 | Right fog light bulb |
| M51 | Left static cornering light |
| M52 | Right static cornering light |
| SB8 | Fuse 8 on fuse holder B |
| SB20 | Fuse 20 on fuse holder B |
| T4f | 4-pin connector |
| T14c | 14-pin connector, near front bumper |
| T40 | 40-pin connector |
| T52a | 52-pin connector |
| T52c | 52-pin connector |
| 371 | Earth connection 6, in main wiring harness |
| 398 | Earth connection 33, in main wiring harness |
| 456 | Earth connection 1, front bumper wiring harness |
| 645 | Earth point 1, on bulkhead |
| 673 | Earth point 3, on front of left longitudinal member |
| B335 | Connection 1 (54), in main wiring harness |
| B352 | Positive connection 3 (87a) in main wiring harness |
| * | Only models with 6-cylinder engine |
| *2 | Wiring colour depends on equipment |
| J519 | Onboard supply control unit |
| MX3 | Left tail light |
| MX4 | Right tail light |
| M6 | Rear left turn signal bulb |
| M8 | Rear right turn signal bulb |
| M16 | Left reversing light bulb |
| M17 | Right reversing light bulb |
| M21 | Left brake and tail light bulb |
| M22 | Right brake and tail light bulb |
| T4y | 4-pin connector |
| T4z | 4-pin connector |
| T52a | 52-pin connector |
| T52c | 52-pin connector |
| 50 | Earth point, on left in luggage compartment |
| 51 | Earth point, on right in luggage compartment |
| 368 | Earth connection 3, in main wiring harness |
| 369 | Earth connection 4, in main wiring harness |
| B520 | Connection (RL), in main wiring harness |
| W71 | Connection (reversing light), in rear wiring harness |
| * | Wiring colour depends on equipment |
| *2 | From October 2011 |
| *3 | Up to September 2011 |
| J519 | Onboard supply control unit |
| T3an | 3-pin connector, in rear bumper |
| T8d | 8-pin connector, in rear bumper |
| T52a | 52-pin connector |
| T52b | 52-pin connector |
| T52c | 52-pin connector |
| V5 | Washer pump |
| X | Number plate light |
| Y | Analogue clock |
| 51 | Earth point, on right in luggage compartment |
| 345 | Earth connection, in bumper wiring harness |
| B340 | Connection 1 (58d), in main wiring harness |
| B616 | Positive connection 12 (30a), in interior wiring harness |
| B698 | Connection 3 (LIN bus) in main wiring harness |
| X150 | Connection (58), rear bumper wiring harness |
| * | Only models with parking aid (PDC) |
| *2 | Up to September 2011 |
| *3 | From October 2011 |
| J9 | Heated rear window relay |
| J519 | Onboard supply control unit |
| R178 | Frequency modulation (FM) frequency filter in negative wire |
| R179 | Frequency modulation (FM) frequency filter in positive wire |
| T10c | 10-pin connector |
| T10d | 10-pin connector |
| T52b | 52-pin connector |
| W9 | Left footwell light |
| W10 | Right footwell light |
| W45 | Rear left footwell light |
| W46 | Rear right footwell light |
| Z1 | Heated rear window |
| 95 | Earth connection 1, in seat adjustment wiring harness |
| 96 | Earth connection 1, in seat heating wiring harness |
| 136 | Earth connection 2, in seat heating wiring harness |
| 657 | Earth point 1, on left near rear window |
| B248 | Connection 2 (heated rear window), in interior wiring harness |
| B569 | Connection 36, in main wiring harness |
| * | Only models with footwell illumination |
| *2 | Wiring colour depends on equipment |
| G397 | Rain and light sensor |
| J39 | Headlight washer system relay |
| J400 | Wiper motor control unit |
| J519 | Onboard supply control unit |
| SB22 | Fuse 22 on fuse holder B |
| SB31 | Fuse 31 on fuse holder B |
| T3ah | 3-pin connector |
| T4k | 4-pin connector |
| T40 | 40-pin connector |
| T52b | 52-pin connector |
| V | Windscreen wiper motor |
| V11 | Headlight washer system pump |
| 278 | Earth connection 4, in interior wiring harness |
| 395 | Earth connection 30, in main wiring harness |
| 646 | Earth point 2, on bulkhead |
| 685 | Earth point 1 at front of right longitudinal member |
| 689 | Earth point, at front, central in roof |
| B324 | Positive connection 10 (30a) in main wiring harness |
| B528 | Connection 1 (LIN bus) in main wiring harness |
| * | Only models with rain sensor |
| *2 | Only models with 6-cylinder engine |
| *3 | Wiring colour depends on equipment |
| E326 | Front interior light button |
| E454 | Rear left reading light button |
| E455 | Rear right reading light button |
| E457 | Driver side reading light button |
| E458 | Front passenger side reading light button |
| J519 | Onboard supply control unit |
| T5o | 5-pin connector |
| T6b | 6-pin connector |
| T6t | 6-pin connector |
| T8ab | 8-pin connector |
| T52b | 52-pin connector |
| T52c | 52-pin connector |
| W1 | Front interior light |
| W11 | Rear left reading light |
| W39 | Left centre reading light |
| W40 | Right centre reading light |
| W43 | Rear interior light |
| Y7 | Automatic anti-dazzle interior mirror |
| 278 | Earth connection 4, in interior wiring harness |
| B154 | Connection 1 (DCt), in interior wiring harness |
| B559 | Positive connection 1 (30g) in main wiring harness |
| * | Only models with rain sensor |
| *2 | Flat conductor |
| *3 | According to equipment |
| E26 | Glove compartment light switch |
| F147 | Driver vanity mirror contact switch |
| F148 | Front passenger vanity mirror contact switch |
| T3ba | 3-pin connector |
| T8ab | 8-pin connector |
| W3 | Luggage compartment light |
| W6 | Glove compartment light |
| W14 | Front passenger side illuminated vanity mirror |
| W20 | Driver side illuminated vanity mirror |
| 278 | Earth connection 4, in interior wiring harness |
| 373 | Earth connection 8, in main wiring harness |
| 438 | Earth connection 3, in roof wiring harness |
| 638 | Earth point, on right A-pillar |
| B552 | Positive connection 2, in roof wiring harness |
| B559 | Positive connection 1 (30g) in main wiring harness |
| * | Flat conductor |
| E457 | Driver side reading light button |
| F5 | Luggage compartment light switch |
| F256 | Rear lid lock unit |
| J393 | Convenience system central control unit |
| T2e | 2-pin connector, Coupling point for rear lid |
| T3as | 3-pin connector |
| T10c | 10-pin connector |
| T10d | 10-pin connector |
| T18a | 18-pin connector |
| V53 | Rear lid central locking motor |
| W12 | Rear right reading light |
| W39 | Left centre reading light |
| 77 | Earth point, lower part of left B-pillar |
| 683 | Earth point on front of right side member |
| 684 | Earth point on front of left side member |
| B447 | Connection (luggage compartment light), in main wiring harness |
| * | From August 2012 |
| *2 | Up to August 2012 |
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