Going to be mounting my twin ARB, under my passenger seat most likely, for the lockers. The only concern I have is how often it start up, I don't want to keep scaring the shit out of my girlfriend. I'll probably add a 1 gallon tank behind the drivers seat. Assuming the volume of the tank, and no leaks, about how many times can I engage the lockers before the pump kicks on? I haven't used ARBs before so I don't know how much air they use to engage.