I finally got fed up of driving my wife's expedition pimped in leopard, because she would not trust it. It would still cut out, sometimes within a few minutes, other times a week or so apart. I decided to take a leap of faith a few days ago, found the fuse box for $290 at gaudinford.com incl shipping - switched it out myself Monday with the instructions posted above. It did take me about an hour or so, wanted to be sure not to break any wires with the numerous connections from every angle. So far so good!!!! Wish me luck.
A special THANK YOU to Strider007.