All of the wires that I saw, associated with the slide motor rocker switch, were of a heavier gauge than any of the other wires to any of other switches. I previously estimated that they were 10 gauge stranded. If I could get to the slide motor easily it would be interesting to see just how many wires go to it. Any way, the problem is the intermittent short that occurs while towing. The wiring behind the switch looks to be in good shape with no crimps or excess insulation removed. Kinda tough to check it when it routes thru the ceiling. The best I can do is check the back of the power panel and the route they wires take up past the refrigerator. If the problem is located in a spot that is not easily accessible, what would be the danger of just pulling the slide fuse when ever we tow? Or is there a breaker type fuse for the 12 volt system that could be used?