MSD 6A Ignition box ?\'s How many wires are there going to the hei coil I have 3 a ground a batt. and the tach. Is there anything I'm missing it is a buddies truck and I have never messed with anything more than a stock ignition. Is there a web page with directions for this ignition somewhere I am getting no spark at all. This is not a problem that came up but, I just installed the motor after a rebuild. I put all wires back where I took them from I don't see anymore but have no reason to believe I have a different problem. Thanks for any help.