I set my Falcon up with a 2 step 20 years ago. I have a simple switch on the dash that I turn off once in high gear. A switch on the shifter makes it simpler.
Not a fan of the button on the pedal. You have to get your foot off the button and the pedal. My Falcon has a brake light pressure switch that the 2 step is wire through. Like this.
http://www.dearbornclassics.com/1964...1960-1965.html
My Chevy buddy drills and tapped his master cylinder for the brake light pressure switch and has the micro switch on the shifter too.
Jeff