Long story short, old man trying to install an alpine stereo w new wiring harness last few days,and somehow car is giving these codes, ac will not stay on also. Any clue what to do? Also replaced shifting boot this morning and wires unplugged there and plugged back up. Many thanks in advance

 

Oof, this is a good one. I would simply start by checking all the fuses, double check all the wires that were handles during the radio install as well for anything out of place.
It is possible that if you did the install with the battery still connected, you may have shorted something.
Just start with what maybe an easy simple fix first. At the least, rule those out.

 

Did you turn on the ign key when any wires were disconnected?