OK - Now I'm inspired - Thanks!
As I said, automating my off-side mirror was an "out of sight - out of mind" project, but working on the above posts has got me thinking.........
I still need to do some testing, but I believe it
may be possible to adapt a newer B style passenger side mirror to work with the older A style switch set up.
It will require the design of a small (hopefully simple) relay module between the Left/Right rocker switch and the off-side mirror, but I think it can be done.
It will be a month or so until I can get to it figure it out, but I'll let you know what I come up with - if you're interested.
Ron