I disagree with the guys' interpretation in the link. The charging system should take care of itself. With the voltage reulator.
I dont know what your problem is. I do know tha most chrysler products. Seem to have more electric glitches, than others. That has been personal experiance though.
Sometimes I have chased the problems myself. Other times I turned it over to independents. That do it for a living. Search out an automotive electical shop that has been in bussines along time. My experiance from several friends. Is that the dealer just wants to reharnes things. Sometimes the harnes and plug design is the problem....GL