06 Pt Cruiser lights flickering

The car-
2006 chrysler pt cruiser 2.4L engine 134362 miles. No fog lights. Automatic trans

The problem-
head lights and dash lights flicker intermittently. It does this when it raining or not. I have noticed it does it no matter what we have running in the car. Also the radio shorts out and won’t come back on unless you shut the car off for a minute and restart it. (not sure if two problems have different causes.)Restarting the car seems to stop the flikering as well.

The fixes that have been tried-
The shop replaced battery cable and tightened both terminals. I replaced the multifuntion switch on the steering wheel. I tested all of the fuses. I even tried to wiggle the wires to lights to see if that would make it do it. (nope) I tested the battery I get 12.5v with car off and 13.36v with car on. (my meter starts with .03v if that helps.)

Everything I could find on the internet says it is a common problem with this car but there are no fixes for it that I could find.

Thank you for all the help.
Marc