The following information covers electrical connections and plugs to the rear of the fuse/relay panel. It completes and supplements the information in the appropriate Service or Repair Manual for the fuse/relay panel section and should be used in conjunction with the wiring diagram for the vehicle or system in question. Volkswagen part numbers shown here may or may not match those on your panel, however, if you panel visually matches the diagram, it is correct for your application. Fuse/Relay Panel - Rear Connections (Volkswagen Part Number 171 941 821 D)
Connections and plugs on rear of fuse/relay panel: A | Blue | 28 pin | Instrument cluster wiring harness | B | Red | 28 pin | Instrument cluster wiring harness (position 5 open) | C | Yellow | 22 pin | Engine compartment/engine management, left side (position 10 open) | D | White | 29 pin | Engine compartment/wiper motor wiring harness, right side (position 6. 10, 14, 18, 27, 28 open) | E | Black | 18 pin | Rear wiring harness (position 17 open) | G | n/a | 1 pin | 10 individual circuits | H | Brown | 6 pin | Air conditioning/coolant fan relay wiring harness | K | Neutral | 5 pin | Seat belt warning system/coolant level wiring harness | L | Grey | 4 pin | Horn wiring harness | L | Black | 4 pin | Headlight/dimmer switch wiring harness | M | Black | 2 pin | Steering column switch wiring harness | M | Black | 2 pin | Headlight/dimmer switch wiring harness | N | Red | 1 pin | Separately fused circuits (glow plug wiring harness) | P | Red | 7 pin | 7 single point connectors for terminal 30 circuit | R | Green | 2 pin | Open/ECM power supply relay |
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| Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market. Always consult appropriate wiring diagram for specific terminal assignments. |
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