[prairieschooner]

I wanted to post this in case it could help someone.
While we were at the River we started to have Electrical issues. I would leave the A/C on when we left and when we returned there was no power?
Here is what Newell installed in our '82 (this is before I started work)
   

I then made a Schematic (I'll post that as soon as I can). But the Shore Power comes in from the right to the Top Relay and the Generator comes in from the right to the Bottom Relay.
The Relays are wired so that both can not be energized at the same time by Normally Closed Contacts so that when say the Shore Power Relay is Energized the Switch is Held Open on it so that the Generator Relay cannot be Energized, here is a pic of the Relay showing the Auxiliary Normally Closed Contact.
   

After I opened the Relay
   
I could see the problem, the Center Contacts had overheated from 33+ years of service and were actually lower than the others, pic is a little out of focus but if you look close you can see the problem with the center contacts.
   

Luckily for me I bought a spare years ago and was able to replace the Relay with a new one from my spares, I'll post the numbers right after I buy another spare.