Those are nice and also nice and pricey, but quite tall. The standard Performance version wiring show the connection feed you asked about. And an additional $176 for the Ford version.
Joe Hunt High Performance Distributor - Joe Hunt Magnetos
http://www.huntmagnetos.com/content/...g_standard.pdf
But they also have a Sym box they sell.
Joe Hunt Tach Signal Converter - Joe Hunt Magnetos
http://www.huntmagnetos.com/content/...ng_diagram.pdf