Trailer Electrical Wiring components

Wiring Diagrams for 13 pin and 7 pin sockets

 Wiring diagram 13pin and 7 pin sockets

  Colour Description
1 Yellow LH Indicator
2 Blue Rear Fog Lamp
3 White Earth for Pins 1 to 8
4 Green RH Indicator
5 Brown RH Tail Lamp, End Outline, No Plate Lamp
6 Red Stop Lamps
7 Black LH Tail Lamp, End Outline, No Plate Lamp
8 Pink Reversing Lamp
9 Orange 12v Power Feed
10 Grey Fridge (IGN Switched Live)
11 White/Black Earth for Pin 10
12 White/Blue Spare (Signal)
13 White/Red Earth Return for Pin 9

 

Wiring diagram - 12N 7 pin 12v (normal)

  Colour Description
1(L) Yellow LH Indicator
2(54G) Blue Rear Fog Lamp
3(31) White Earth
4(R) Green RH Indicator
5(58R) Brown RH Tail Lamp, End Outline, No Plate Lamp
6(54) Red Stop Lamps
7(58L) Black LH Tail Lamp, End Outline, No Plate Lamp

 

A 13 pin socket on a trailer with reversing lights will need an adaptor when coupled to a 7 pin socket on a towing vehicle, however the reversing lamp will not be functional.

Coiled lighting cable 7 pin to 13 pin or vice versa

Adaptor for 13 pin vehicle to 7 pin trailer

Adaptor for 7 pin vehicle to 13 pin trailer