Yesterday, jumped in the 2005 F350 Dually and drove about 2 miles when the windshield wipers and washer fluid came on by themselves. I could increase the speed of the wipers with the switch but not turn it off. Then in about 5 minutes, just as they had come on, they stopped. Then, a couple of minutes later they were back on. They went like this off and on for about 10 minutes until I pulled the fuse in the engine bay. I started the truck this morning and put the fuse back in and they were back on within a few seconds. Anybody seen this? I've found some related threads but none matching my exact conditions. 125k and inside of the firewall was dry as a bone.