wondering the same thing. there's a 91 in my driveway that's about to get torn apart and this would sure make it easier upon reassembly. @H3ADBANG4L1F3
I would try and isolate potential causes such as:
leave the truck off and the radio blasting for a while.
fire up the truck, let it idle for a while and leave everything else off.
drive around without non-essential electrical things on.