A not uncommon occurrence for 94-04 Ford Mustang is for the electric fan wiring harness to overheat and melt. If this is the case for your 'stang replace it with this wiring harness assembly from Motorcraft.
Item #LRS-8607R-H MPN# WPT168
Sale Price: $35.99
Everyday Low Price: $39.99
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Provided everything I needed: harness, heat shrink, wire connectors and instruction. The instructions where clear and easy to follow. From start to finish it took about 15 to 20 min to switch out and it had a professional look. My original wiring harness was melted and burnt, I was hopeless and thought I'd have to take it to a mechanic. I had no idea on where to start, I searched the web using various keywords and could not find a thing. My brother in-law recommend LMR, within seconds of searching the site (keyword "fan") I found this wiring harness. I was able to order the wire harness and cooling fan for what I would of paid for just the fan at my local auto part store.
Ford Motor Company Genuine Parts, Motorcraft® Parts and Ford and Motorcraft Remanufactured Parts are all excellent choices when it comes to performance, longevity and value for your Mustang or SVT Lightning. And they’re all backed by a Ford Motor Company limited parts warranty*, so you know their parts you use are going to perform like they should. Put the same parts on your Lighting & Mustang that came from the factory! Shop LatemodelRestoration.com for Motorcraft oil, oil filters, friction modifier, spark plugs, and many other replacement maintenance items!