Ford F 350 Trailer Lights Wiring Diagram. Not sure about the wiring the 7 pin connections. Brown pin for unwanted markers tail lights and running lights.
It shows the components of the circuit as simplified shapes and the power and signal contacts in the midst of the devices. It may transfer electricity better so the connector is recommended for higher level electric in the auto. I looked up the trailer connector wiring diagram for a 2007 ford f 250 which should be the same as a ford f 350 and found the 7 way trailer connector to contain the following wires.
Purple for backup lighting.
Green pin yellow pin for appropriate brake light and right turn mark. Purple for backup lighting. Is the oem trailer wiring pattern the same for dodge ford and gm vehicles etrailer com trailer light wiring trailer wiring diagram diesel trucks. Its the 4 pin connector.