I'll have to see if I can find a photo of the switch I put in my USS64, I wired in a DPST switch so I could shut off the lights in our media room when we wanted it dark for a movie. Mounted it in the metal shield on top of the ballast in the coin door area.
I'd love to see this too. I just got a USS-8-64K and would like to shut off the lights at certain times.