I have seen a loose or corroded ground wire kill headlights. I have no clue on your particular vehicle, but they are typically a short wire coming off the back of the headlight and screwed to the radiator support somewhere. Might be worth a look if you can get out of the rain.
96 coachman catalina 198CB Ultra-Lite. 19'-11" long, 7'-10" wide, and 8'-9" tall (plus AC) as well as a borrowed truck.