Dash Lights

[cico7]

The stalk for the lights has been causing problems for some folk. Check TSB's and go to jeep.com for owners and see if there are any recalls on your Jeep.

[superacerc]

You're not running a few class D 1500 watt amps with a few sets of 12" and 15" speakers are you? If so you might be deaf as well. j/k
I had an amp and set of subs that used to hit pretty hard and would cause lights to flicker. It was obvioius though that when the bass hit the lights dimmed. I had rythmic light failure caused in part by old battery (not your issue) and the need for a capacitor.
That was back in my highschool days when I thought hearing loss was cool.

Good luck.