electrical problem
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New User
Joined: Nov 2010
Posts: 7
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electrical problem
I have a 97 f350 that keeps shorting out the #4 tail light fuse. It only shorts out when you drive the truck a little aggressively or at higher speeds. It does not short out if you drive slow or idle the truck. I have replaced the headlight switch and have checked each light attached to that fuse by disconnecting them one at a time and no luck. I've also checked the trailer harness with no luck. Any ideas ?
Senior User
Joined: Aug 2009
Posts: 432
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From: Willow Grove, PA
Trailer harness connectors? Bare wire in rear fuel tank area of frame rail? Stop & Turn or parking lights? If Stop & Turn check the 3rd brake light extension wire (lt grre I think) that runs to the rear of the frame (factory wire incase a cab installed so truck remains "legal").
Senior User
Joined: Aug 2009
Posts: 432
Likes: 0
From: Willow Grove, PA
Factory roof lights? If yes pull the pass side kick panel off connector is behind it 2 wire connector w/ Blk & Brwn wires I think. See if loose or corroded from moisture or water leaks. take apart clean w/ tooth brush type wire brush apply di-electric grease & reassemble. do not tape connector up make corrosion from moisture occure faster.
