ha yeah, there is a little four button control panel just by the cd player, this controls the amount of air in each shock.
Basically there is a small compressor in the battery tray that feeds four valves behind the passenger seat which in turn distribute the air around. I'm not fully sure why it was ever fitted but i know it was fookin expensive and with little to be gained from it.
There is an air feed in the back of the truck that you can apparently run air tools off, but judging by the size of the compressor i can't see you getting along run of work done