Caravan 13 pin Wiring Chart

13‑pin caravan wiring maps indicators, lights, brakes, reversing, fog, battery power, fridge ignition and earth returns to color‑coded wires (e.g., Yellow left indicator, Green right, Brown/Black side lights, Red brake, Orange battery, Grey fridge) using 1.5mm² for lights/signals and 2.5mm² for power/earth.

from Western Towing – www.westerntowing.co.uk

Pin No.	Function	13 core wire colour	Cable Core Size
1	Left Hand Indicator	Yellow	1.5
2	Rear fog light(s)	Blue	1.5
3	Earth for contacts 1 to 8	White	2.5
4	Right Hand Indicator	Green	1.5
5	Right Hand Side lights, marker lights & number plate light	Brown	1.5
6	Brake lights	Red	1.5
7	Left Hand Side lights, marker lights & number plate light	Black	1.5
8	Reversing light(s)	Pink	1.5
9	Positive direct from battery (Power)	Orange	2.5
10	Positive ignition key on (Fridge)	Grey	2.5
11	Earth return for contact 10	White/Black	2.5
12	Signalling connection to trailer	White/Blue	1.5
13	Earth return for contact 9	White/Red	2.5

About the Author: Chris Hood

Chris Hood is a Director of Western Towing, bringing over 23 years of hands-on experience in towbars, trailers, and towing solutions. Having worked directly with vehicles, customers, and installations throughout his career, Chris combines practical expertise with in-depth industry knowledge to deliver reliable, safe, and tailored towing solutions. His commitment to quality workmanship and customer service has helped establish Western Towing as a trusted name across the South West.