Welcome to the FFO.
There are a couple of diagrams I found on the net. However you have to join or create an account. Do a earch for 2004 F Series trailer wiring diagram. The factory wiring diagram is $45 delivered in the US on ebay. Kind of cheap in the realm of factory publications.
Otherwise you are connecting wires from circuits to the 4 way or 7 way connector. Depending if you have trailer brakes and lights or just lights.
Left and right turn signal
Brake lights
Action
![White Font Line Parallel Rectangle]()
![Rectangle Slope Font Parallel Diagram]()
There are a couple of diagrams I found on the net. However you have to join or create an account. Do a earch for 2004 F Series trailer wiring diagram. The factory wiring diagram is $45 delivered in the US on ebay. Kind of cheap in the realm of factory publications.
Otherwise you are connecting wires from circuits to the 4 way or 7 way connector. Depending if you have trailer brakes and lights or just lights.
Left and right turn signal
Brake lights
Action
