We often receive requests for a trailer plug and tow bar socket wiring diagram.

This is a wiring diagram for the 12n, 7 pin standard towing socket & trailer plug, it also covers the wiring of any UK trailer and most European standard 12n wiring. As viewed from the rear part as you look at the wiring terminals.

Unfortunately we can not supply actual vehicle manufacturers wiring diagrams as they change on a regular basis. It is just a case of testing for feeds prior to connecting the trailer wire in to your vehicle loom.

We hope you find this wiring diagram useful.

Here are some other wiring instructions that you may also find useful:

ZK1022 - 12n Single electrical kit wiring instruction.

ZK1034 - 12n/12s Twin electrical kit wiring instruction.

ZK3000A - 12n Single bypass electrical kit wiring instructions.

ZK3020A - 12n/12s Single bypass electrical kit wiring instructions.

ZK1328A - PCT Automotive bypass relay wiring instructions.

All the above files are in PDF format, if you can not open them then go to www.adobe.com to download Adobe Acrobat reader for free.