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Sure bro, the sw is spring loaded w a round knob on the end that contacts the pedal arm. W the knob all the way out you have continuity (light on) & you need to have the pedal pushing the knob in further (compressed/no continuity) so that it takes a hair more (than what you have now) pedal travel away (downward) b 4 the knob reaches the end of it's travel & the br lite comes on. EDIT borrow a VOM & w the ohmmeter function you'll b able to get it right as you'll b able to tell exactly when it makes/breaks contact (disconnect both female connectors b 4 using the ohmeter function on the male switch terminals not the white/pink female ones)

I appreciate your attempt to help, I understand the function but not the adjusting procedure. Where is the adjusting screw located?