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Have a little problem with the wiring on my 99 F250 4x4 SD.
The clearance lights went out on my trailer. I tested the plug and didn't get any power for the clearance lights, everything else works.sigs,brakes,elc brakes....
Iv'e gone under and check the wiring and the plugs..
what i've found is the trailler plug is good and the plugs are good but no power coming from the clearance light wire.
I trace the wires back and come to main wiring harness and still no power....
Also the clearance lights on the truck still work..
Does anyone no where those wires go and if there's maybe a fuse.
It seems the trailer plug has It's own sperate wires in the harness....
where does it go.........................
Any help would be great...................
The clearance lites are hooked to your park lights. Do you have park lights on the trailer that are working? If so then you have a trailer wiring problem not the truck.....
Jumped the clearance lights on the trailer with 12 volts and they worked...
The plug (not really the plug but the clearance power wire going to the plug coming from the main wire harness on the truck ) on the truck is the problem .I traced the wires back to the main harness and still no power...
Do those wire go under the dash or somewhere else?
And can I jump off the truck wires that goto the tail lights ?
I had to change a fuse in the box under the hood.Cannot remember which one but it was yellow and had the type of fuse you can see the wire inside.Good luck
That loose plug is whats causing the fuse to blow.
It creates a high resistance.
Just thought I'd add this also ,water getting into the plug doesn't help either.