[Richard]

anything is possible.

Here is a sanity check. Press the three way switch in one direction and wait five minutes with engine idling. You need to measure ride height before pressing the switch and after wards.

If the ride height decreased you exhausted air from the tag and lowered weight on the tag tires. Why, cause the air bags on the Ridewell suspension are not big enough to completely lift the rear of the coach at 120 psi. Trust me, leave that switch in that position and you will make custom grooves in the tag tires.

Now, if the ride height does not change then you have increased the air pressure in the tag air bags, increased weight on the on the tag tires, and decreased weight on the drive tires. Hmmm, why, because in this situation the leveling valve will let air out of the drive axle to maintain height.

Last step, get out the label maker, and make a label in language you relate to, and put the label on the console.