1987 Ford F150 Starter Switch
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I had a similer problem on my 1988 F150. If you open up your steering column you'll find a little aluminum bar connected to the switch (kind of hard to explain) I had a hard time finding this part but found one at a junkyard from a recently wrecked bronco. If you find the bar I am talking about you can just push it in to start your truck until you find the new part, but of course so could anyone else!
Good luck
Good luck