Ok so its only happened a few times:
I go to get in my jeep. Sometime I turn the key to the start position and nothing happens. Then all of the sudden all my guages turn off (basically the battery cuts off). So I go out and wiggle the positive terminal. The lights come back on, turn the key.... and nothing. I have to do this like 3 more times, then finally it starts! WTF is going on?? Bad battery? I took the terminal off and cleaned it... still happens.
HELP!