Thanks for everyone’s input.
Based on all advice, we’re getting a newer truck (2005 CH613 pic below) and will sell this one (2001 CH613) for salvage. It was not possible to find a donor 2001 daycab after nationwide search. We could only find a sleeper cab in Georgia.
Like Geoff summed it up, we’d be chasing one problem after another messing with scorched wires hoses etc.
If anyone knows of someone who needs parts from a low mileage 2001 CH 613, E7 with 10 speed tranny and locker rear ends and air ride suspension, then let me know.