Trailer Plug Not Working
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Senior User
Joined: Nov 2005
Posts: 184
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From: Sapulpa, OK
Trailer Plug Not Working
I have a 2000 f350 and the trailer lights stopped working a couple of days ago. I have looked in the fuse block and checked the fuse at the back of the truck and still nothing. I have checked each prong on the flat and round plug and get nothing on any of them. Are there any more fuses? Any other ideas?
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
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From: Cabot, Arkansas
All the fuses for the trailer lights are in the junction block under the hood. A pinched wire in the trailer will normally pop one of the fuses in the first four positions (the mini blades) in the underhood box.
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Elder User
Joined: Apr 2004
Posts: 797
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From: Wickenburg, AZ
Ford keeps separate fuses for the trailer harness and for the truck's lights. Make sure you are checking the right fuses.
If they are all good, I would check to see if you've got a good ground first. Having no lights at all makes me not as anxious to send you right to chase for a pinched wire or a fouled up trailer plug.
If they are all good, I would check to see if you've got a good ground first. Having no lights at all makes me not as anxious to send you right to chase for a pinched wire or a fouled up trailer plug.
5th Wheeling
Joined: Mar 2006
Posts: 26
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I have a '99 CC SD 4x4 and my left turn signal/brake light for the trailer connecters was not working. After countless hours of testing and chasing wires, I gave up and took it to a shop.
Tech checked every fuse under the hood until he found a bad one. The problem very simply was a mismarked fuse pattern guide in the owner's manual and on the fuse box cover!
Tech checked every fuse under the hood until he found a bad one. The problem very simply was a mismarked fuse pattern guide in the owner's manual and on the fuse box cover!
