Here are the wiring diagrams for UK 7 pin & 13 pin sockets or plugs. The 7 pin standard trailer socket, it also covers the wiring of any UK trailer and most European standard 12n wiring.. Connecting lighting to your semi-trailer using the 7-PIN or 13-PIN connector? Get started right away with the semi-trailer wiring diagram.
On this page you'll find wiring diagrams for the most common trailer plugs and vehicle sockets, so you can troubleshoot and fix your trailer lighting with confidence.. Wire your trailer Lights, Brakes, Breakaway, with a Trailer Wiring Diagram for 4, 5, 7-pin connector - Colors, Functions, and Wire Size Guide