Too late. Just got off the phone with Alliance. He said it is normal, that is the way they wire the coach. Stated what is now becoming the obvious - not grounded to earth. He said since they wire it that way, IF there was a problem, it would be covered under warranty.
I'm not sure what I have learned from this whole thing, but I certainly climbed around that unit and traced a whole lot of wires. That was quite enlightening. Also installed a Renogy BT-2 on the solar controller while I was in there.
I appreciate the time you all took to send your replies. Very much. Thank you all.