And here is one from my old 66 Trade Wind. It is from the owner's manual. I share it because basic Airstream wiring is kinda the same stuff. There is the 12v
circuits, and then the 120vAC circuits.
I do not know when Airstream started the "univolt" system where everything was powered by the battery. This so you could have all the comforts of home while parked in the middle of Africa. It was a big deal for Airstream and most manufacturers have followed suit.
The wiring diagrams start with the battery for 12v
, and the "shore power" and circuit breakers for the 120v.