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Originally Posted by backyardmechanic
I'm trying to troubleshoot my 1998 f150. I'm having a right blinker problem. It acts like a burn out bulb but I have replaced the bulb with a know good one and still acts the same. I suspect a relay. I know where the relay distribution box is but how do I identify which relay goes to what?
Thanks
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If all else fails, check the turn signal switch itself. The fact that you can push it to a certain spot and it works, leads me to believe its the problem. If yours has the multifunction switch, they give alot of trouble. The back of the switch is open in several spots, and dust and dirt can enter. It has alot of sliding contacts that can get dirty and cause problems like youre having. I take them apart and clean the contacts, and usually keep a spare one ready to go. Theyre pretty pricey, about 80 $ at autozone, and over 100 from ford i think. If you have a buddy with the same switch, you can swap em in a few minutes and see if that cures the problem. Only 2 screws, and 2 harness connectors, after you get the cover off. Good luck
Later
Ed
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