7 Pin Round Trailer Receptacle Wiring Diagram. Start by stripping the ends of your trailer cable by 5mm using a wire stripper. 7 way plug wiring diagram standard wiring post purpose wire color tm park light green battery feed black rt right turnbrake light brown lt left turnbrake light red s trailer electric brakes blue gd ground white a accessory yellow this is the most common standard wiring scheme for rv plugs and the one used by major auto manufacturers today.
Purple for backup lights. Start by stripping the ends of your trailer cable by 5mm using a wire stripper. Trailer connector narva 82181bl 7 pin large round plug abs housing 4502.
Brown pin for unwanted markers tail lamps and running lights.
White pin to your floor. Purple for copy lighting. Here are two wiring diagrams for the 7 pin n type trailer electrical plug. Click on the image below to enlarge it.