So I am looking at putting some air bags in my 2000 F250 with an board air compressor and tank. I have noticed some people say to run two separate lines to each bag having its own solenoid and gauge. Why is this necessary? I was hoping to run one line and split after the solenoid into each bag with just one gauge showing the balanced pressure between the two. The only reason I can think of having two separate is for leveling. But my trailer is bumper pull, so I would be evenly weighted. Any thoughts? :shrug: