Anyone ever rigged up a 2 step switch to run off your brake pedal?

I would appreciate it if you would point me in the right direction for one of these switches.
Also what's to keep the 2 step from coming back on down the track when you apply the brakes?

I instructed a member here how to wire a 2 step into his horn with a toggle switch.
Toggle one way was the horn, and the other way was the 2 step using the horn on the steering wheel.