I have a Western UltraMount w/ 3-Port ISO on a F350. I was out plowing this morning when my plow quit working (no up or side2side). The plow lights are still working. I have a joystick controller and the red light is on. When I unplug/plug the tap fuse to the controller the light goes out/on. I've visually checked the wiring, and don't see any corrosion or breaks. Any ideas/help would be greatly appreciated.