Wiring Diagram AUDI A8 2002 - Ignition/starter switch - lighting switch - headlight dipper/flasher switch - X contact relief relay
| A | Battery |
| B | Starter |
| C | Alternator |
| D | Ignition/starter switch |
| E1 | Lighting switch |
| E2 | Turn signal switch |
| E4 | Headlight dipper/flasher switch |
| J2 | Hazard warning light relay |
| J59 | X contact relief relay |
| J285 | Control unit with display in dash panel insert |
| S204 | Fuse -1- (30) |
| T3ar | 3-pin connector, black, at turn signal switch |
| T3as | 3-pin connector, black, in centre console |
| T14 | 14-pin connector, purple, behind steering column switch trim |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| A5 | Positive (+) connection (right turn signal), in dash panel wiring harness |
| A6 | Positive (+) connection (left turn signal), in dash panel wiring harness |
| A17 | Connection (61), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A34 | Connection (75x), in dash panel wiring harness |
Wiring Diagram AUDI A8 2002 - Daytime driving light switch-on relay - daytime driving light change-over relay - resistance wire
| J89 | Daytime driving light change-over relay |
| J90 | Daytime driving light switch-on relay |
| N74 | Resistance wire |
| T2ac | 2-pin connector, brown, electronics box, in footwell, front right |
| E104 | Earth connection, in dash panel wiring harness (near relay point) |
| E108 | Connection (right-hand parking light), in dash panel wiring harness |
| * | Headlights without gas discharge lamps |
| ** | Headlights with gas discharge lamps |
Wiring Diagram AUDI A8 2002 - Left headlight - fuses - bulb monitoring device
| J123 | Bulb monitoring device |
| J285 | Control unit with display in dash panel insert |
| M1 | Side light bulb, left |
| M29 | Dipped beam bulb, left |
| M30 | Main beam bulb, left |
| S1 | Fuse in fuse carrier |
| S2 | Fuse in fuse carrier |
| S3 | Fuse in fuse carrier |
| S4 | Fuse in fuse carrier |
| S5 | Fuse in fuse carrier |
| S6 | Fuse in fuse carrier |
| T10x | 10-pin connector, black, on left headlight |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 82 | Earth connection -1-, in front left wiring harness |
| A51 | Connection (56), in dash panel wiring harness |
| A95 | Connection -1- (56a), in dash panel wiring harness |
| C1 | Positive (+) connection (58L), in front left wiring harness |
| C2 | Positive (+) connection (58R), in front left wiring harness |
| C17 | Connection (56b) -1-, in front lighting wiring harness |
| E116 | Connection (56a, right), in dash panel wiring harness |
Wiring Diagram AUDI A8 2002 - Right headlight - bulb monitoring device
| J123 | Bulb monitoring device |
| M2 | Tail light bulb, right |
| M3 | Side light bulb, right |
| M4 | Tail light bulb, left |
| M31 | Dipped beam bulb, right |
| M32 | Main beam bulb, right |
| S3 | Fuse in fuse carrier |
| T6d | 6-pin connector, white, footwell, right, at wheelhouse, behind carpet |
| T10e | 10-pin connector, green, footwell, right, at wheelhouse, behind carpet |
| T10y | 10-pin connector, black, on right headlight |
| X | Number plate light |
| 83 | Earth connection -1-, in front right wiring harness |
| 98 | Earth connection, in tailgate/boot lid wiring harness |
| A37 | Connection (58a), in dash panel wiring harness |
Wiring Diagram AUDI A8 2002 - Fog lights/rear fog light control unit - front fog lights - fog light switch
| E7 | Fog light switch |
| J285 | Control unit with display in dash panel insert |
| J512 | Fog lights/rear fog light control unit |
| L22 | Fog light bulb, left |
| L23 | Fog light bulb, right |
| T10v | 10-pin connector, in bumper, front left |
| T18 | 18-pin connector, blue, on fog lights control unit |
| T32 | 32-pin connector, blue, on dash panel insert |
| 125 | Earth connection -3-, in headlight wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| C21 | Connection (+), in front fog light wiring harness |
| C25 | Connection (fog light), in front lighting wiring harness |
| E113 | Earth connection, in dash panel wiring harness, right |
| E115 | Earth connection (centre console), in dash panel wiring harness |
Wiring Diagram AUDI A8 2002 - Fog lights/rear fog light control unit - rear fog light switch - rear left fog light bulb
| E18 | Rear fog light switch |
| J285 | Control unit with display in dash panel insert |
| J512 | Fog lights/rear fog light control unit |
| L46 | Rear fog light bulb, left |
| S5 | Fuse in fuse carrier |
| T10m | 10-pin connector, grey, footwell, right, at wheelhouse, behind carpet |
| T18 | 18-pin connector, blue, on fog lights control unit |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32b | 32-pin connector, grey, on dash panel insert |
| 98 | Earth connection, in tailgate/boot lid wiring harness |
| A19 | Connection (58s), in dash panel wiring harness (switch illumination) |
| A88 | Connection (rear fog light), in dash panel wiring harness |
| B205 | Connection (fog lights), in interior wiring harness |
| E115 | Earth connection (centre console), in dash panel wiring harness |
| W4 | Connection -1- (rear fog light), in rear wiring harness |
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