you need to learn what can run on 12v DC power and what runs on 110v AC power.
a/c's can only run when you have shore power or a generator running. same for the microwave, heated mattresses, outlets.
you can't depend on being plugged into the truck, for power. the truck will only send a very small amount of 12v DC power, through the pigtail.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC