After my car sat for two months due to overheating/coolant pump issues, my Turn signals, Back-up lights, Hazards, Interior dash, fog lights, Halos Rings, and high beams would not work. The exterior lighting system only provided low beams and the brake lights, along with the rear celis leds. I realized that i had resistors set up for my led turn signal bulbs. Those connections were exposed to water(rain) and so I figured I had a short. I removed my tail lights completely, drained them and dried all light bulb sockets, then removed the led bulbs and resistors, and placed the original amber halogen bulbs and now everything works, except for the reverse/back-up lights. Does anyone know what could be the problem?