The Stovebolt Site Forums The Shop Area The Electrical Bay Try to fix my horn

So i checked again. As you can see on my first post picture there is a H and a S on the cover. The middle one is not marked. But how is it possible that i have current on the middle connection and on the S ?? S should be ground right? And H should have nothing until S is grounded. Is the relay broken?

Thanks

Edit: just removed the cover. And all looks clean and correct