Re: MSD Blaster Coil Help
Update on this. I called MSD and they tell me that the coil negative (black wire) should be going to the Distributor Controller and the tach. So evidentally the way this works is that my Mallory HEI has a three wire plug on it- one to ground, one to coil positive and one to coil negative. The coil negative wire has current flow coming from the direction of the distributor. The distributor circuit collapses each time IGN fires due to its connection to ground. So ground can then make a loop back to the coil as negative for a split second.
Does this make sense to anyone out there? Seems reasonable... but feel like I got a technical explanation that I only half followed.
1969 Camaro 383
2.02/1.63 & 234/244 Vortec
TH350 / 12 bolt 3.73