I was hoping someone would have a Schematic...I was gonna draw one...and I ain't got the time just now.
That is the way I was trying to Explain!

 

I've had one on my '77FXS for about five years now and it still works great. No relay problems, no solenoid troubles and it starts every time.

The way it was explained to me, "don't try and figure out how it works just wire it like the diagram says." Good advice.