I have a 2002 Ford F-150. Last weekend my headlights kept coming on at night, when my truck was off and the lights were off. And it would lead into killing the battery. Monday I took it into the dealership and they said it was the low battery that was causing the lights to come on. So they put a new battery in, and all was good for a couple days. But this morning I went out to my truck and the lights were on again. Does anyone know what might be causing this????