Check the listing for details. Trailer Lights N type 7 pin Plastic Socket (Flying Socket) TR043. Condition: New. Listed at 17.86 USD. Trailer Lights N type 7 pin Plastic Socket (Flying Socket) TR043 Description This listing is for a 7 Pin socket (N type) trailing socket to power trailer or caravan lights or perfect for making extensions. Screw connection inside the plug, easy for DIY replacement. Brass pins in a durable plastic housing. Provides connections for indicators, side lights, brake lights and fog lamp. 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. We have more products available in our store Click Here