R R Trailer Wiring Diagram. 4 way trailer connectors are typically used on small trailers such as boat snowmobile utility and. The 7 pin flat plug will fit into a 12 pin flat socket and work perfectly.
Horse trailers may use the center pin for 12v hot lead rv. Not all trailers are equipped with reverse lights yellow wire. Blue pin for electric brakes.
Trailer wiring diagrams trailer wiring connectors various connectors are available from four to seven pins that allow for the transfer of power for the lighting as well as auxiliary functions such as an electric trailer brake controller backup lights or a 12v power supply for a winch or interior trailer lights.
When shopping for trailer connectors remember that the male end is mounted on the vehicle side and the female on the trailer side. December 25 2021 wiring diagram. Narva 7 and 12 pin trailer connectors comply with all relevant adrs. The table below with the diagram explain the connections used on a 7 pin setup.