electronic voltage regulator wiring & HEI

I need some input on how you guys with pre 1970 cars updated your alternator/ voltage regulator..to the 2 field alt w/ electronic V reg. To make things more interesting I'm ditching my point distributor and installing a GM HEI.
My 64 ignition switch has a IGN1 & IGN2 with a ballast I know to jump the ballast., for the HEI. But I'm not quit sure were to tie in the wiring for the electronic V regulator. If someone can help me that would be great..I sure could use some help ASAP..........Thanks guys