Thank Ed, I understand how the ignition works basicly but not what happens inside that little black box.I can see on the schematic the wire that seems to be the problem is a straight shot from CDI to ground side of that coil but I don't know if that is a common ground or 2 different circuits. I am going to go out today with a continuity tester now that I know what the wires are and what they connect to.I hope it is as simple as a broken wire. I am pretty much stumped if it isn't that.

The lack of spark did move with the coil inputs every time.

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