12V 7 pin plastic socket with metal plate 7*0.75mm2*1.5M RVV cable Trailer Connector

Connect the major vehicle and the additional trailer; Transfer the electronic signature from the vehicle to trailer.
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.

7 Pin Lighting Connections – 12 N Black Cable Function

PIN 1 – Yellow Wire (Left/Hand Direction Indicator)

PIN 2 – Blue Wire ( Rear Fog Lamps)

PIN 3 – White Wire ( Earth Return)

PIN 4 – Green Wire (Right/H Direction Indicator)

PIN 5 – Brown Wire (Right/H Tail & No. Plate Lamp)

PIN 6 – Red Wire (Stop Lamp)

PIN 7 – Black Wire (Left/H Tail & No. Plate Lamp)

Caravan 7 pin supplementary circuits 12S grey cable function

Pin 1- Yellow Reversing Lamps

Pin 2- Blue Battery Charging (original UK system)

Pin 3 -White Earth Return (for pins 2&4)

Pin 4- Green Power Supply

Pin 5 -Brown Spare

Pin 6- Red Fridge

Pin 7- Black Earth Return (for pin 6)