I am pretty bad with electricity. I just hooked up my new dual headrest dvd players and tapped into the cigarette wires in the back. There is a dim red light on each dvd monitor when the car is off. Is that gonna kill my battery? I am just asking because my last dvd player had the adapter that plugged in to the back cigarette outlet with a little green light and it was fine. Someone told me to run it to the fuse instead. It was just hard to hide and get to.