Anderson Plugs & Charge Circuits Melbourne - Ph: 03-9729-8477 Anderson Plugs and Charge Circuits. Check out our 12 Pin plug wiring diagram. whereas an Andersen plug will accept larger wires which means we get a better result when charging the battery in the caravan. Anderson Plug with large charge wires. This circuit is very simple. How to fit an Anderson Plug | Without A Hitch Charge your caravan’s battery or run your van’s fridge when towing by fitting an Anderson plug . How To Fit An Anderson Plug. or easier still, cable-tie the relay to a wiring loom or bracket. Make sure the wiring and the relay do not obstruct the foot pedals or steering column. 12 Pin plug wiring diagram - Australian Caravan Centre PDF filePlease find enclosed in this booklet a 12 Pin Plug wiring diagram and Anderson plug information required for the towing vehicle. This can be given to an Auto Electrician in preparation for wiring your car to match your caravan. 12 Pin Plug Connection In conjunction with Anderson Plug