Hi Bob,  This became popular and I posted it.  Go the the main page and scroll down to products review.   Open Bob Farmers post about the craftsman auto switch.  It was Nov 10 that I first mentioned the switch. This was on page 1 of the post.

  On Dec 2, 2011 I posted some information about it this is on page 2.  Continue reading about the posts and you will start seeing some of my posting about the switch.  It will contined and eventually you will see diagrams I posted and all the information about the switch including how to build one your self.

If you have problems finding it then recontact me and I will loacte my orrigional for you.  Presently they are stored away and not available to me at the moment