Sounds like you've got the same as what is standard here. Just a round blank spot where that additional switch is at the top?
On my original, it's the flasher/high beam that's been the problem. Something is broken or out of place internally. It doesn't switch easily and it won't always hold when on Hi. I was going to try and take it apart but heard here and elsewhere that one may or may not get it back together properly. And if it is broken then it might not work at all once I mess with it so I held off.
When I had my charging problems a while back, we talked here about being able to switch the headlight on and off and the two main suggestions were switching wires on the ignition switch or getting the Euro headlight switch. So when one came available I grabbed it thinking it was just a straight swap.
I guess I'll find out...... if it's a little quirky, that's fine, I'm more concerned about frying something or having it not work at all when it comes to electrical things.