I have to find the schematic I drew up when I wired it, I know I found it on the net and was real excited about it so I copied the diagram by hand. I was going to cheat and use the Hoppy converter to accomplish the same thing within the wiring of the truck but it wouldn't pass enough current to run the system. My truck is a '57 so it's all 12 volt.

1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy