Hi jwhite you may want to check if the alternator is charging the battery.
The way you can check this is with the vehicle on take off the negative terminal of the battery and if the vehicle turns off you would have an alternator problem.
Well Texas weather is kind a crazy. The day the ceramic coating was done it was a beautiful day. The next day it was cold and today it was warm.
As time passes Ill try to keep informing on how it holds up.