Msd 6AL-2 with pro billet?

MSD pro billet has a two wire connector. You can buy extended wiring from them, or the ends and connect it directly to the 6421 ignition box..... here's the link for the pdf file that has multiple wiring diagrams and might answer your questions. Looks like a 6AL and a 2 step module put in a single small unit.

http://www.msdignition.com/Products...igital/6421_-_MSD-6AL-2_Ignition_Control.aspx