Wiring Diagrams for Trailer Plugs and Sockets
Find clear, easy-to-follow wiring diagrams for 7, 8, and 13-pin trailer sockets and plugs. Whether you’re wiring a new trailer, upgrading an existing setup, or troubleshooting electrical issues, this guide explains pin functions, colour coding, and best practices for safe, reliable connections. Ideal for DIY users and professionals setting up trailer lights, brakes, and auxiliary power systems.
How To Guides and Videos
Our How To guides answer the most common trailer and towing questions. Each guide combines clear written advice with a practical video from the GT Towing team, showing what to check, how to do it safely, and when to get professional help. Ideal whether you tow occasionally or every day.
Guide to Calculating your Trailer Wheel PCD
Learn how to calculate your trailer wheel’s PCD (Pitch Circle Diameter) using a clear, step-by-step approach. This guide includes straightforward explanations, helpful illustrations, and an easy-to-read reference table to help you identify the correct PCD for your trailer wheels.
UK Towing & Trailer Legislations
Explore a comprehensive guide to towing in the UK, covering licence requirements, weight limits, speed restrictions, and how to calculate your vehicle’s towing capacity. The guide also explains trailer type approval, lighting, and braking laws, with practical advice to help you stay compliant.
Register your trailer for use abroad
Planning to tow your trailer outside the UK? This guide explains the legal requirements for towing abroad, including safety checks, insurance, and documentation. It covers trailer registration, countries where it’s mandatory, and what information you’ll need to stay compliant.




