7 Pin Plug Specifications This listing is for a 7 Pin plug (N type) to do the lights on a caravan or trailer. Ideal for new builds or for replacing damaged plugs on existing trailers. Screw connection inside the plug, easy for DIY replacement. Brass pins in a durable plastic housing with rubber seal. Provides connections for indicators, side lights, brake lights and fog lamp. Also available with an aluminium case, please see our shop for this version. Wiring Guide PIN 1 Yellow Wire (Left Indicator) PIN 2 Blue Wire (Fog Lamp) PIN 3 White Wire (Earth Return) PIN 4 Green Wire (Right Indicator) PIN 5 Brown Wire (Right Side light) PIN 6 Red Wire (Brake lights) PIN 7 Black Wire (Left Side light) This guide shows the standard wiring colours, but your trailer might not be standard. If it is not then you should note which pin number each wire goes to before removing the old plug and simply connect the new one the same. 7 Pin Socket Specifications This listing is for a 7 Pin socket (N type) to power trailer or caravan lights. Ideal for new tow bars or for replacing damaged sockets on existing cars. Brass pins in a durable plastic housing. Provides connections for indicators, side lights, brake lights and fog lamp. Also available with an aluminium case, please see our shop for this version. PIN 1 Yellow Wire (Left Indicator) PIN 2 Blue Wire (Fog Lamp) PIN 3 White Wire (Earth Return) PIN 4 Green Wire (Right Indicator) PIN 5 Brown Wire (Right Side light) PIN 6 Red Wire (Brake lights) PIN 7 Black Wire (Left Side light) This shows the standard wiring colours, but your car might not be standard. If it is not then you should note which pin number each wire goes to before removing the old socket and simply connect the new one the same.