Jerry,
After looking at the link you posted, I see that it is for the starter switch with a terminal on the side.
In the photo above that shows the starter that is currently mounted on the engine in my project, there is a wire that is apparently connected to the same terminal as the heavy gauge wire that comes from the battery. Is there something else involved with the terminal on the side, or is it just more convenient to have the wire attach to a seperate post?