Trailer Wiring Diagrams

4-WAY PLUG CAR END

4 Way Plug Car End

4-WAY PLUG TRAILER END

4 Way Plug Trailer End

Standard Electrical Connector Wiring Diagram

NOTE: Standard wiring pictured below, viewed from the rear of connector (where wires attach). Not all trailers/vehicles are wired to this standard. The use of an electrical circuit tester is recommended to ensure proper match of vehicle’s wiring to the trailer’s wiring. On the 6 way plugs the 12V wire and electric brake wire may be reversed to accommodate trailer (particularly horse trailers).

6-WAY PLUG CAR END

6 Way Plug Car End

6-WAY PLUG TRAILER END

6 Way Plug Trailer End

7-WAY BLADE PLUG CAR END

7 Way Blade Plug Car End

7-WAY BLADE PLUG TRAILER END

7 Way Blade Plug Trailer End

7-WAY ROUND PLUG CAR END

7 Way Round Plug Car End

7-WAY ROUND PLUG TRAILER END

7 Way Round Plug Trailer End

WARNING: It is necessary to use an electrical tester to ensure proper match of vehicle’s wiring to trailer’s wiring. Failure to do so may cause damage. * Due to the wide variety of applications on the 7 way round plug, it is necessary to take extra care in matching the vehicle’s wiring to the trailer’s wiring.