Hope I 'm in time to add some more info.
The quest for cleanliness and understanding continues!
I am cleaning from the stern forward, and found some more electricals.
In addition to the relay under the bed, I found one tonight under the rearward facing seat of the dinette, mounted on the inboard bulkhead of the generator housing. Next to the relay box is a breaker box with a single breaker/switch. This junction might be the one you are looking for.
I'm finally at the point that I can see some things actually getting done, and that gives me a lot of encouragement to continue on.
I'm very pleased with what I have uncovered so far, no surprises, no slipshod repairs, and no evidence of water damage.
Even though the existing blinds are in good shape, I'm replacing the wood blinds with pleated blinds to open the interior up a little.
The PO had replaced the cockpit and bedroom cortains just a couple of yeears ago, so they are in pretty good shape.
"Suck it up, spend the bucks, do it right the first time."
WBCCI # 1113
Trailer '78 31' Sovereign
Living Large at an Airstream Park on the Largest Lake Totally Contained in Texas
Texas Airstream Harbor, Inc.