Sorry if my overly casual reply offended you.

Thanks for the referral to the installation PDF. I had already found that. Now what I would like to find is a source for the controller itself. Perhaps the Airstream dealer sells them?
If you have any clues as to a vendor or supplier for the Automatic Foot Controller No. 1100-28, I would appreciate hearing about it, as would others on the board. Google (and other search engines) show none.