I have a 1989 electric club car. Occasionally, after driving at night with the lights on, the headlights turn off for a while. No matter what I do, the lights won't work! After it sits for a while, they'll come back on. I already ruined my last set of batteries by leaving the switch on and parking it! Naturally, when I wasn't home they came back on and drained the batteries down to nothing. Batteries are too expensive to have that happen again plus it makes driving at night a real challenge to say the least! Does someone know what could be causing this? Thanks