Wiring Diagram VW JETTA RUSSIA 2014 - Trailer detector control unit - Onboard supply control unit - Fuse 24 on fuse holder B - Fuse holder C
| A | Battery |
| F | Brake light switch |
| J345 | Trailer detector control unit |
| J519 | Onboard supply control unit |
| SB24 | Fuse 24 on fuse holder B |
| SC | Fuse holder C, on relay carrier |
| SC40 | Fuse 40 on fuse holder C |
| SC41 | Fuse 41 on fuse holder C |
| SC42 | Fuse 42 on fuse holder C |
| T4al | 4-pin connector |
| T12a | 12-pin connector |
| T52c | 52-pin connector |
| 508 | Threaded connection (30) on E-box |
| 662 | Earth point, rear left side panel |
| A52 | Positive connection 2 (30), in dash panel wiring harness |
| B131 | Connection (54), in interior wiring harness |
Wiring Diagram VW JETTA RUSSIA 2014 - Trailer detector control unit - Onboard supply control unit - Trailer socket
| J345 | Trailer detector control unit |
| J519 | Onboard supply control unit |
| J533 | Data bus diagnostic interface |
| T12a | 12-pin connector |
| T13 | 13-pin connector |
| T16f | 16-pin connector |
| T20 | 20-pin connector |
| T52c | 52-pin connector |
| U10 | Trailer socket |
| 430 | Earth connection, in towing bracket wiring harness |
| 662 | Earth point, rear left side panel |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
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