turn signals blowing fuses

25

Asked by Dec 02, 2007 at 08:19 AM about the 1998 Ford Expedition 4 Dr Eddie Bauer 4WD SUV

Question type: Maintenance & Repair

I keep blowing fuses for my turn signals have had to 3 garages and they can't find cause, did have problems with broken wire on running boards that is fixed but problems continue, when they stop my seat heaters also stop, can you give me any thoughts not the combination switch have had that replaced.   Thanks

1 Answer

44,585

Sounds like too much resistance in the turn signal wiring harness. Check all of the sockets for the turn signals and see if they are corroded or gunked up. Clean them with electrical contact cleaner and lubricate the bulbs with a waterproofing dielectric grease, available at auto parts stores. Visually inspect the wiring for any cracks or breaks in the wiring that could cause the lights to ground out. Also have the seat heaters checked, it is possible they are somehow causing the fuse to blow, these pull a lot of amperage and if they are malfunctioning it may be related.

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