Ex-Navy ET here - 11 years. Let’s troubleshoot.
Did the ACs work when connected to a campground power source?
They do work on the Generator.
You are connected to a buddies garage using an extension cord and a dogbone to go from 15 or maybe 20 amp receptacle to your rig.
Is it the right dogbone?
Are you tripping the buddies breaker?
If you start from scratch - all AC devices off in the coach, hook up to buddies house, store/use in store, set store/use to use and you get lights. Then look at microwave - does the front panel have lights? Then try to turn the rear AC on with fan set to low. Does it work? If not, did you trip the buddies breaker? If not, did you trip your coach AC breaker?
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