| D | Ignition/starter switch |
| E1 | Lighting switch |
| E4 | Headlight dipper/flasher switch |
| E19 | Parking light switch |
| J5 | Fog light relay |
| J59 | X contact relief relay |
| S3 | Fuse in fuse box |
| S236 | Fuse in fuse box |
| T14 | 14-pin connector, black, at steering column switch |
| A3 | Positive (+) connection (58), in dash panel wiring harness |
| A9 | Positive (+) connection (56b), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A34 | Positive (+) connection (75x), in dash panel wiring harness |
| A43 | Positive (+) connection (57l), in dash panel wiring harness |
| A44 | Positive (+) connection (57r), in dash panel wiring harness |
| K1 | Main beam warning lamp |
| L1 | Twin filament bulb for headlight, left |
| L2 | Twin filament bulb for headlight, right |
| L22 | Fog light bulb, left |
| L23 | Fog light bulb, right |
| M1 | Side light bulb, left |
| M2 | Tail light bulb, right |
| M3 | Side light 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 |
| S22 | Fuse in fuse box/relay plate |
| S223 | Fuse in fuse box |
| T5 | 5-pin connector, headlight, right |
| T5a | 5-pin connector, headlight, left |
| T6 | 6-pin connector, yellow, right connector point, A pillar |
| T6a | 6-pin connector, red, right connector point, A pillar |
| T6b | 6-pin connector, yellow, left connector point, A pillar |
| T6c | 6-pin connector, red, left connector point, A pillar |
| 176 | Earth connection, in right headlight wiring harness |
| 179 | Earth connection, in left headlight wiring harness |
| A9 | Positive (+) connection (56b), in dash panel wiring harness |
| E7 | Fog light switch |
| E18 | Rear fog light switch |
| J218 | Combi-processor in dash panel insert |
| J347 | Ultra-sonic sensor control unit |
| K95 | Alarm system warning lamp |
| L40 | Front and rear fog light switch illumination bulb |
| L46 | Rear fog light bulb, left |
| L47 | Rear fog light bulb, right |
| S14 | Fuse in fuse box/relay plate |
| T6e | 6-pin connector, blue, left connector point, A pillar |
| T6f | 6-pin connector, orange, right connector point, A pillar |
| T26a | 26-pin connector, blue, on dash panel insert |
| 81 | Earth connection -1-, in dash panel wiring harness |
| 86 | Earth connection -1-, in rear wiring harness |
| 135 | Earth connection -2-, in dash panel wiring harness |
| A1 | Positive (+) connection (30a), in dash panel wiring harness |
| A19 | Positive (+) connection (58d), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A47 | Positive (+) connection (55), in dash panel wiring harness |
| * | Only applies to Audi Avant models (from 1996 model year) |
| ** | Only applies to Audi saloon models |
