Any luck with this fix? I have the same problem with my 2002 F-150, went to the local Ford dealer to buy the part and he didn't have any in stock, and said that Ford has discontinued it.
He sold me a part for the Winstar for $13 dollars thinking it would work. It looks like it will probably fit, but it comes with it's own wiring harness that I'd have to use that would replace the harness with the inline fuse. I'm a little apprehensive about removing the fuse from this system.
Anyone know where to look online for the original part, or a part #?