[Al Skierkiewicz]

We have used a Radio Shack modified six position switch for many years. It is a simple matter to remove a detent that allows you to select one of twelve auto mode program features. You simply wire 9.1k resistors in a series string across each tab of the switch, attach 5 volts and common, and wire the wiper of the switch to an analog input. You then have twelve steps in voltage from 0v to 5v. Search and ye shall find discussion on this here on CD.