OK unstrapped 2nd amp and no change, checked all fuses and moved power wires to opposite ends of battery bank no change.
I have 5 runs of shok 1/0 front to back, 3 positive 2 negative.
Checked all Batt's with the truck off all sitting at 13.1 after 4 hours checked everything running to make sure all connections were good and no change all charging at 14.1 and should be set at 14.7-.8 with my avbm will check cold start voltage and I'm going to replace the belt just for kicks in a few hours.
Also checked Alt and said it was charging at 14.1 no load other then headlights