My 1998 Town Car has developed a problem. My tail lights do not come on when I turn on the headlights. Brake and hazard lights are fine. If I let it sit for some time and check it again, the lights work again, but go out again within minutes. Just starting to look into it. Wondering if it's something heating up somewhere and losing connection. Maybe the headlight switch? Lighting control module? Ground? In all cases, when the tail lights are not working, the brake and hazards still work. This problem just started yesterday and has never happened before. Any ideas would be appreciated!