OK--I got the prodigy (thanks to those of you who referred me to the web where I found it for about $100--about half of what one dealer wanted to charge me for the unit!). Now comes the interesting part: matching the prodigy black, red, white and blue wires to the 4Runner harness with its black,yellow, green, green with yellow, and white with black. By my count that is one too many wires on the Toyota harness. In addition, the instructions which come along with the prodigy for the "Toyota Installation" don't even have the right colored wires (brown???). Need one of you gurus who has put in the prodigy to help me with which wire goes to which. And what is this "butt connector" that I am supposed to connect the wires with? Thanks!