[SCHMIDTY]

Check that the front brake lever actuates the switch, don't use your finger. Those switches will still work if the tip of the switch is broken off. The switch tip breaks when someone removes the front brake clamp then reinstalls without shimming the brake lever avoiding the switch.

 

[SCHMIDTY]

Will the brake light go off if you unplug the wires from both switches at the same time. If not then there's a short to B+, a normally hot (B+) wire making contact with a bare spot on the brake light wire causing the light to remain on without the switch activated.