My solution on our old TT was to install a weather proof 12V outlet by each wheel well. Then I was able to use my 12V TruckAir to air up the tires. As a side bonus, for night time tire changes on the road (yes we
DO travel at night) I can plug in my 12V 100W halogen flood light and actually SEE what I'm doing. I'm getting to the point where I don't think you can have too much light
It has come in handy in the past.
I also had an outlet on the bumper of the TT that I could plug in a revolving amber light to add extra caution for road side problems. That one was also used a couple of times
I have it in my current upgrade plans to add the same outlets onto the Monty. They were very useful.
Eric