Thanks for the information. That will help me change it faster. My local parts store didn't stock it, but could order it. The Ford dealer wanted over $100 for it. I bought mine on www.carparts.com
for $41.91. I got another 10% off when I searched the internet for "carparts.com" and "coupon" and found a discount code. I had the part within a week. I haven't installed it yet because I am in TX right now and my truck is at my place in AK. I'M SURE it's the problem though. I tried a new switch already and that didn't help.