Thank you Richard!
But there are both frontlights switched off. And I also try to switch on and off and on and off a few times. So I‘m affraid it isn‘t the stalk, but something between?
And: I have a look around about the STC4017 switch. There are LUCAS and BRITPART available, there is a massive difference in the pricetag. Is there also a difference in quality?
Greets René