Reostat ST185 light.

The dash is put together now and I doubt if the dimmer should be illumated yes or no?
I own this car for decades, but before I rip the reostat from the dash: is it illuminated?
I really don't know anymore???
I own this car for decades, but before I rip the reostat from the dash: is it illuminated?
I really don't know anymore???