4 Flat Trailer Wire Harness Diagram. These guidelines will probably be easy to grasp and apply. 4 wire trailer plug wiring diagram.
4 pin trailer wiring diagram. This 4 prong trailer wiring diagram version is far more acceptable for sophisticated trailers and rvs. Here is the diagram for 7 pin connector.
The white wire must be attached to the trailer for the grounding and power supply of the lights.
They can be purchased as a standalone plug for the truck or trailer or as a complete loop with both the plug and the socket included. Blue electric brakes or hydraulic reverse disable see blue wire notes below in the trailer wiring diagram and connector application chart below use the first 5 pins and ignore the rest. Brown pin for side markers tail lights and running lights. Up to 7 cash back curt 58030 trailer side 4 pin flat wiring harness wi.