Starter is not cranking?

CAR STARTS!! and it sounds much better doing so.

It only starts when the +12v run signal to the MSD is directly to the battery though, I can't seem to figure out where to get it from the ignition circuit. I hooked it to the side of the ballast that has voltage and it doesn't seem to work. Looking at the wiring diagrams right now, but if someone has some advice I'd be more than willing to take it.