JayTheCPA & others, thanks for your thoughts and comments.
I am slowly trying to make the most logical updates as funds allow.
At this point I think I should simply replace the entire electrical system. It seems like it would be more logical for all of the systems and controls to be located together at the rear of my Sovereign
taking advantage of the large rear hatch to aide in future access to the systems. I am thinking it would be easier to build an entire new system, use new panels and run the wiring along the interior walls within exposed galvanized steel conduit pipe, junctions, boxes and covers. I am also needing to replace the heating system ducts and am looking at an exposed flat oval steel duct product.
But, as noted by others as well as myself, I am not fully up to speed on how the dual 12v
115a systems work together. One comment from another person referenced the presence of an inverter. There is not an inverter currently installed if I understand what one looks like. Inverters are part of my learning curve that needs to be mounted.
I do hope to make the Airstream more road worthy as well. It needs axels, has rear end sag as well as all the rest of an interior. I hope to create a home that can again accommodate my son and myself as well as follow my son to college in the fall of 2020.