Re: what\'s going on here?
Actually, the problem is easy to track down. Your headlights are about the only device on the jeep that uses an automatic circuit breaker (CB). If there is too much current draw, i.e., short, the CB trips and then resets....ever see a car going down the road and the headlights are flashing?...and it wasn't because of a cop up ahead?....thats the CB triping. If there is not a short, then the CB is bad. Unless you have current meter, the easiest way to fix it is to put in a new one...its only a few bucks. You will most likely find it on the fuse block.
If its not the CB then you may have a short somewhere. If its not a costant short then you will have to do the bump and shake test....which can be done during the day. Just go around each section of the wiring and bump and shake it until you see the lights go off.