RTB

So there's a new issue. Tach kills the spark. No idea why or how.

I think that was the problem. Cleaned the back of the module and got spark. Thank you Mike for helping me out. Fired her up and she sounded incredible.

Is the body of the matchbox supposed to ground on the distributor? The back is metal and pretty dirty.

It does spin.

Yes it does

OK so I used a second battery as a dedicated source of power to the + side of the coil and the b pin. Still no spark.

OK will do.

I have a dedicated ground from the distributor to a ground.

OK during cranking my figures are: from the + side of the coil I go to about 9.5-10 volts. On the negative side same thing. On the b pin of the matchbox I go down to 9.5-10 volts and on the c side it jumps up and down.

Which plug are you talking about?

OK update with figures. In the ON position, bother the + and - sides of the coil have 12 volts. Both the b and c pins have 12 volts as well. These are all to ground figures.

So to explain in more detail - right now I have the black/blue and black/white wire connected to the + side of coil. I have a wire going from the + side of the coil to the b pin of the matchbox. I have a wire going from the - side of the coil to the c pin of the matchbox. I get no spark

Mike, I don't get anything during cranking from the b pin to the + terminal.

I have a black and green wire in that area too. Should that be going to anything?