"Be a man and hook direct power". Now thats funny..... The only reason i said I thought it was a fuse was because nothing happens when I turn the heat on whether it defrost or ac or just regular vent nothing happens at all. And thats for speed 1,2,3, and 4. However I am still getting some heat come in while I am driving and of course the faster I go the warmer it gets. Thats why I am on SSM asking this question obviously I didn't know. If I wanted an asshole to respond then I would have went to my local parts store.