couldnt find the info i was looking for in any of the diagrams in the book or the forums so ill ask away. in looking over my jeep i recently bought i noticed the purge canister has hookups for three vacuum lines but the one labeled purge has nothing attached to it and i dont know what is supposed to be hooked up to it. where is a vacuum line from this spot supposed to hook up to or is it supposed to be just left open or capped off?? thanks!!