Fuses...or bad wiring/connection. Hope you're not a victim of rodents. They're a bunch of bastards when it comes to cars. They eat through your wiring and fuck everything up. I had to put chili powder in a few areas of my engine bay because I suspected the damage I was seeing was due to rodents (squirrels in my case). So annoying because there's no way to get away from it without parking it in the garage...one of which I do not have.
Hope you find it's just a bad fuse or connection though.