12 Pin plug wiring diagram - australiancaravancentre PDF file12 Pin Plug wiring diagram and Anderson Plug required for Towing Vehicle Anderson Plug required 7 Pin Plug (Round) 7 Pin Plug (Flat ) 12Pin Plug (Flat Assorted Caravan & Trailer Plugs below; Breaksafe Monitor Ignition Source Sensor Wire For AES Fridge White Fridge Supply Red & Brake Safe Charging Earth Return Black Auxiliar Narva | Trailer Plug Wiring Guide A colour coded trailer plug wiring guide to help you require your plugs and sockets. Includes guides for 7 pin, 6pin, 5 pin, 12 pin, 12 pin trailer waiting diagram. Flat connectors comply with Australian Standard AS4177.5-2004. Narva 7 & 12 Pin trailer connectors comply with all relevant ADRs. Twelve-Pin Trailer Plug Guide For Caravanners - Without A A 12-pin plug is sometimes an alternative to an Anderson plug if the caravanner wants just one electrical connection between car and van. without the chance of the vehicle’s starting battery going flat. Twelve-pin wiring. Pin Connection Colour. 1 Left indicator Yellow 2 Auxiliary or reversing light Black Caravanning Guide - Trailer Plug Wiring Diagrams | Caravan Trailer Plug Wiring Diagrams Use the correct size cable for the plug/socket - most standard plugs will accept up to a 4mm auto cable easily. The 12-pin flat plug have a second row of 5 larger points which will accept up to 6mm auto cable. For best results, do NOT run battery charge lines, or fridge power lines through a 7-pin or 12-pin plug.