You lost me Joe.

I said I can control Cruise Airs and Webasto from there. I did not say that I do while driving. I have OTR so I will stay warm or cool. But if it quits, I can start a generator and turn on a cruise air if I need to. Stuff like that comes under the heading of nice, but not essential

I seriously question why you want to control lighting from the driver's seat. I also question what you have to control on the inverters. They are either on or not, right?

A word about my ability to control the AC units. In order for me to operate them from the driver's seat I need to have the breakers "on". I also have to have each Cruise Air control "on". Mine are the SMX controls. I don't know if your vintage coach has those controls or the older style with the knobs. Only if the previous controls are set can I turn my Cruise Airs on or off from the driver's seat.

Panel Nazi, huh? I bring reason to insanity. I'm keeping you from becoming a victim of your own actions. Keep it simple.