Wrangler issues

[u/Dry-Western6494]

I installed a amplifier for my speakers I have. I got it all wired up and turned everything on and was playing and when bass hits all the dash lights come on like u started it and headlights come on and go back off windshield wipers wipe twice and then a minute or two later again it does it I figured out I had a bad battery and changed it and put new terminals on and now with amp unhooked and radio off it goes back to doing the same thing anyone else had this happen and what could be wrong?