(can't edit) if the thing in my pic is not a fusible link / main fuse type thing, *is* there one for my truck that I can start looking for? It's really behaving as though a wire in a fuse/relay that controls all electrical power is momentarily disconnecting due to heat. If it weren't for losing every electrical accessory including the hazard lights I'd think I had a failing key cylinder, but that wouldn't kill *everything* electrical.