Here is yet another great find. This switch is slightly larger and has the added feature of an internal small light bulb, just like the one shown here https://pbase.com/9146gt/image/136566789 and illuminates when set to the "ON" position. Again, very convenient as a visual-cue for showing the status of the switch.

I could use this switch to control the Driving/Fog Lamps https://pbase.com/9146gt/image/22405016 + https://pbase.com/9146gt/image/22265158, maybe the Roof Lamp https://pbase.com/9146gt/image/22265155, or the "Race Car Number Identification Lamps" https://pbase.com/9146gt/image/22265154. The #40 Sonauto 914-6 GT https://pbase.com/9146gt/factory_9146gt_race_cars_sn9140431020_sonauto40_glenn_stazak&page=all used similar switches, see here and read the photo description https://pbase.com/9146gt/image/136586308

DESCRIPTION - Bosch Fog Light Switch, 12V, inside with bulb, lights up green, switch total length is 5,5 cm, switch knob diameter is 2,7 cm, Made in Germany, nos, new old stock. The Bosch Fog Light Switch is made in Germany and a classic part accessory for VW Bug, VW Bus, VW Karmann Ghia, VW Type 3 and Porsche