I am having trouble starting my Jeep. When I turn over the key all the needles on the gauges go haywire jumping all around and it acts like the battery is dead, and won't start. This happened about a week ago and i kept turning the key on and off and it finally turned over with no additional problems for about a week, now I can't get it to start. It seems that wiggling the key in the ignition makes the needles jump even more. Anyone know what the problem is?