PS: I subsequently purchased these switches and my plan, when I get the time, is to drill another hole (size 13/16) in the mirror trim piece and splice the radar detector hot wire into the switch so that I can just reach around the mirror and turn off the radar detector when I do not want it screaming at me around town.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1