What is the wiring key for my trailer’s lights?

All European trailers should be wired in basically the same way. Connection to the tow vehicle is made in one of two ways.

Most common is a Black seven pin socket and plug (12N), this is used for all the lighting on a trailer. This may be accompanied by a Grey seven pin plug and socket (12S), which is used for all ancillary devices. E.g. Battery charging, 12 volt power supplies, reversing lights.

You can view the wiring key chart for your trailer using one of the links below.

7 Pin Standard Plug (Black 12N) — VIEW CHART
7 Pin Supplementary Plug (Grey 12S) — VIEW CHART
13 Pin (Europlug) — VIEW CHART