Trailer Wiring Connection Diagram. Anton diedericks created date. Socket and plug are keyed.
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. Trailer wiring diagram. 7 rows 4 way trailer connectors are typically used on small trailers such as boat snowmobile utility.
Plug size is similar to an australian 10c coin.
The second wire green to originate from the connector is responsible for the right signal. In some cases and more often in europe the trailer light will be connected using a 13 pin plug and socket. Socket and plug are keyed. The pins usually have a small screw to retain the wire on the back.