I added rear airbags to my Greyhawk not because i needed them for extra weight or stabilization, but because I needed another 1.5” clearance to get up my driveway. I have the heavy duty skid wheels, but the dump valves would still just touch. The bags gave me 2.5” more clearance and that did the trick for me. I also use them when coming out of gas stations etc where I’m worried about hitting.
I added onboard air and control panel so I can control the air bags from the cab. I use air for tires etc to so I added a type “T” hose coupler. I had extra room in the panel so I added an outside temperature gauge with ICE warning. I used the coin holder area because that's completely useless to me.
The compressor i used was a VIAIR 440C and the tank is a 5 gallon AirMaxxx.
I made the panel using a company called Front Panel Express.
This is so cool! You go to their website and download the free designer software (PC, MAC or Linux).
It’s pretty simple to use. Once you figure out the size of the panel you want, you just drag and drop holes, squares, lettering etc where you want. It calculates the cost as you’re going. When your done, save and send. In 2 weeks your panel arrives. My panel was about $40 delivered. A little pricey, but not considering I would have put a couple hours minimum to do it plus materials and, it wouldn’t look as good. I learned about this tool from another RV enthusiast. I have the blank template for the late model E450 coin holder if anyone is interested in making their own custom panel for this area. Just start with the template and start adding your holes and lettering.
Front Panel Express:
Front Panel Express: Front Panel Design Software and CAD Conversion Service: Home
I hope this information helps someone!