Don't know about air bags. Just to add something to what has been raised, I do run a 3 gal 120v air compressor from my 2000w Vector MSW inverter no problem.
I was unable to inflate my trailer tires to 50lbs with the cheesy 12v compressor I had, never mind 80lbs on the truck. In fact the 120v compressor has a hard time getting them to 80lbs. I quit at 75 :(
The other main thing is how to run any sort of big inverter "from the truck." I have mine on four batteries in the trailer. My truck battery with an inverter on it with the engine running can keep a 1000w inverter going with about 600w of load (a 35 amp Vector charger) Any more than that, the truck voltage dies right off, so that's my limit. (others might do better with a bigger alternator etc etc)
You might have to have a biggish battery bank in the box of the truck to run a biggish inverter to run the air compressor. Then recharge those batteries with an extension from the 7-pin, or whatever means you have at hand.
