As I have mentioned in previous posts my wife and I bought an 06 f350 Dually. We learned that the previous owner put a bed on it if from a 2011+. Today I wanted to check and see why the market lights on the rear fenders weren't lighting. I pulled down the fender liner and figured it out pretty quickly...There is no wiring plugged in to the lights. In fact there is no wiring to be found anywhere.

I would like to get these working so I am trying to figure out how the wiring harness for these lights might work. Clearly the wiring has to connect to both sides and then tap in to something somewhere. Does anybody have any information or pictures as to how this wiring works?

Thanks

 

For the life of me I can't find this wiring. I know they updated the fenders but the original fenders had marker lights in them too so it had to be there at some point. Do they come from the bed? I see no holes for wiring in the side of the bend when I remove the fender liner.

 

All of the running lamps, License, marker, and tail/running lamps use the same circuit/wire. It’s a solid brown wire, ground is black. If the harness was cut, missing, it should be fairly easy to fab up a replacement.
The left/drivers side fender marker should run from the main harness (below the tail light) through the rear most bedside and split off to both the fender lamps. The right, i don’t remember but may have ran across the rear bed span from the main connector group (servicing the right lamp) and up through the bedside, or, across a cross member like lighted running board harness would..