I would be pretty sure that your mirrors are Velvac. From my owner resources I have copied the following, "The Velvac web site also contains detailed installation instructions and the owner’s manual for your mirrors. They are easily accessible in the resources section, of
www.velvac.com/reources. They are listed by Model of mirror. The documents include adjustment, maintenance, wiring, and replacement parts information." Here is the RV page
https://www.velvac.com/vehicle-segments/motorhome-rv