How to find wire shortage

What is your question?

I have replaced alternators 3 different times, so I thought this was the problem again when I jumped the car it doesn’t hold a charge I thought that was a problem, my mechanic said no I have a wire shortage issue. Lately when I turned the car over the CD player went crazy and to get the heater/air condition blower would only work after you tapped a certain spot under the glove box.

What makes this problem better or worse?

Alternators go bad quickly - wiring shortage somewhere

How long has your 2008 Hyundai Sonata had this problem?

Couple years