4 Pin To 7 Pin Trailer Adapter Wiring Diagram. Tried several different adapters and had the same problem each time. That way the trailer brakes are ready, if the tow vehicle has.
Please see the Trailer Wiring Diagram and Connector Application Chart below. The first step in wiring your trailer cables is to ground the white cable first. It gets complicated when you have trailers with more cables, and in this case, you need an adapter to make the connections.
This will inevitably lead to blown fuses and Splice the seven-pin trailer plug leads to the trailer harness.
They can easily snag or get frayed.
Do you have an adapter just the opposite of this one? Endurance™ Flex Adapters provide for greater flexibility and protection from daily use. That way the trailer brakes are ready, if the tow vehicle has.