from what they told me when i bought my first oasis is that it can run off either a 12 volt system or a 24 volt system...just depends on how you hook it to the batteries but its good to go on either one....but your truck wont run off 24 volts so your screwed there....i made a video few days ago of my oasis pumping but quality sucks cause its on a phone but you get the point....5 gallon air tank