It actually sounds like a problem in the fuse box. make sure with the rotten weather you have had that you don't have a fuse box with moisture in it or rust between the contacts. Ran into a back feed the other day that was caused by poor ground connection and a faulty fuse holder in box. Caused lights to go on and other to go out by the way it would cure itself as soon as temp came up over 40 degree's Too cold to work on outside so hang tight