Thank you for the detailed post Roger. I have a question about this part: "Version II got morphed around mid 98 and they removed (sadly) the floor pedal that allowed one to manually set or release the parking brake."
I have a 1992 Holiday Rambler built on a 1991 chassis. Based on your post, I would have a Version I AutoPark, however I do in fact have a foot pedal to manually set the parking brake. I will note that the transmission was replaced under previous ownership, but don't think that would mean the whole AutoPark was "upgraded" as well?
What is the significance of the parking brake (since you mentioned it was sadly removed). Does it work like a traditional car parking brake locking the rear wheels or....?
Also, (knock-on-wood), my system seems to be operating fine, however I notice that when I take my RV out of park it literally takes a full 7ish seconds for the AutoPark light to go out. I am free to move, it just seems like the light stays on "too long". Is this normal?
Edit after I took the time to read that wonderful link on the AutoPark! I "solved" my version question and see that I should have a Version I. So if the foot brake and the "gear shift in park" do the same thing, why have both? If there is loss of pressure for any reason, the system fails in the braked position, so I would think the foot pedal is not needed at all?