I called the Airstream dealer in Eugene, Oregon to get an idea of price and availability of the switch 914A3 for my Armstrong A/C and they told me they never heard of that brand and it was probably something a previous owner threw up there and I should put the proper A/C the Dometic Penguin.
When I said it was a factory unit. He told me it wasn't that he was aware of and needed to talk to the service manager on Monday. This was at a dealer. SMH
After that joyful conversation I just emailed inland RV. Lets see where this goes.