Hey Chris,
From what I can find your 2018 Winnebago Vista 29VE has 19.5" wheels so the Wheel Masters 4-Hose Inflation Kit # WM8001-135 would work. Based on the photo the 135 degree bend is likely going to be the best fit but you might have to play around with it to get it perfect. These inflation kits can easily be installed at your home so you aren't wasting money on labor. I've attached a short video below where Dave will walk you through the installation process. view full answer...
Hey Al, great questions!
The Demco Air Force One # SM99243 will link into your motorhome air brakes which is where the compressed air comes from.
The Demco Stay-IN-Play Duo # SM99251 actually has special instructions starting on page 16 of the linked instructions that shows what to do whether your vehicle has vacuum-assisted breaks or hydro-boost brakes. You can reference the instructions to see all of those details. view full answer...