New member from Holland here!
I own several Opels and one is a Stationwagon of an Opel Rekord.
It's a '67 Luxe, red interior, like all the others.
As I'm restoring it, since the age of time, I was looking for parts; like that little light switch / potentiometer between the two big round tacho's in the dashboard.
I was hoping to find answers here to get me a new one, a replacement or how to fix my own.
I measured mine, it still has resistance, but not like it's supposed to, from little to more, it just has the same overall.
Hope to hear from you guys soon!
Will post more info about the car and pinctures as soon as I'm ready.

Greetins!
(btw. Bernhard got me here, through of the Facebook-page)