Wiring Diagram AUDI A2 2003 - Side light switch - brake light switch - trailer socket
| A | Battery |
| E27 | Side light switch |
| F | Brake light switch |
| S88 | Strip fuse |
| SB10 | Fuse -10- on fuse box |
| SB26 | Fuse -26- on fuse box |
| SB27 | Fuse -27- on fuse box |
| SB30 | Fuse -30- on fuse box |
| U10 | Trailer socket |
| 61 | Earth point, left C pillar |
| 65 | Earth point, left longitudinal member, rear, between B and C pillar |
| 238 | Earth connection -1-, in interior wiring harness |
| 500 | Screw connection -1- (30), on relay plate |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A84 | Connection (58L), in dash panel wiring harness |
| A85 | Connection (58R), in dash panel wiring harness |
| A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
| B131 | Connection (54), in interior wiring harness |
| B139 | Connection (PL (parking light, left)), in interior wiring harness |
| B140 | Connection (PR (parking light, right)), in interior wiring harness |
| B156 | Positive (+) connection (30a), in interior wiring harness |
Wiring Diagram AUDI A2 2003 - Ignition/starter switch - parking light switch - reversing light switch - trailer socket
| D | Ignition/starter switch |
| E19 | Parking light switch |
| F4 | Reversing light switch |
| SB29 | Fuse -29- on fuse box |
| U10 | Trailer socket |
| T16 | 16-pin connector, diagnostic connector, black, near fuse box |
| T17 | 17-pin connector, brown, in footwell, front left |
| T17e | 17-pin connector, blue, in footwell, front left |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A87 | Connection (RF (reversing light)), in dash panel wiring harness |
| A104 | Positive (+) connection -2- (15), in dash panel wiring harness |
| * | As of model year 2003 no longer fitted (phased-in modification) |
| ** | Phased-in modification |
Wiring Diagram AUDI A2 2003 - Turn signal switch - front and rear fog light switch - hazard warning light relay - convenience system central control unit - trailer operation warning lamp
| E2 | Turn signal switch |
| E3 | Hazard warning light switch |
| E23 | Front and rear fog light switch |
| F216 | Rear fog light cut-out, contact switch |
| J2 | Hazard warning light relay |
| J234 | Airbag control unit |
| J285 | Control unit with display in dash panel insert |
| J393 | Convenience system central control unit |
| J446 | Parking aid control unit |
| K18 | Trailer operation warning lamp |
| L46 | Rear fog light bulb, left |
| T32 | 32-pin connector, blue, on dash panel insert |
| U10 | Trailer socket |
| 238 | Earth connection -1-, in interior wiring harness |
| 249 | Earth connection -2-, in interior wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| B152 | Connection (BL (turn signal, left)), in interior wiring harness |
| B153 | Connection (BR (turn signal, right)), in interior wiring harness |
| * | Only applies to models with parking aid, rear |
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