04 3500 Electrical Issues.
#1
04 3500 Electrical Issues.
Bought this truck used a couple months ago. I basically have three seperate but I suspect related problems. 1: Headlights flashing or coming on when switch is in parking light position. 2:Wipers when on delay sometimes double or triple wipe. or swipe once when switch is off. 3:No power to trailer brakes when pedal in truck is applied. Power is there when brake controller is operated manually. I suspect a PDM or FCM problem is causing all three problems. Any reliable fixes without throwing parts at it?? Can the corrosion problem be fixed by cleaning terminals?
#2
There are many wiper problem posts. Mine do the same thing, I just read on this site that replacing the wiper motor is a solution. I have read other places pushing your wiper relays in harder helped, testing relays, replacing multi function switch (wiper switch on steering column). I have had a new fuse box installed and it helped a bunch of electrical problems. I think my pdm was replaced if that is something different. Was under warranty at dealership.
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