12 amps at 12 volts, are you sure? That's less than 1/5th of a horsepower. I've never seen a compressor
, capable of providing air for any sort of meaningful use, that didn't pull at least 1/2 horsepower. Unless you're just lying still, doing no work
, and never going below about 8-10 ft, I question if that compressor will provide the air that you need.
Good luck, regardless.