HEI Upgrade but No Spark (kinda)

HEI ---People throw this word around, are you talking about an actual GM style separate module?

Did you bypass the ballast resistor? Sounds like you left the bypass circuit "hanging." There should have been a brown coming out of the bulkhead that attached to the coil + end of the ballast resistor. The simple way to do that is to connect all of the ballast wires together and hook them to coil +, then hook the power wire from the module to coil +

Detail how you wired this up and what kind of module you used, IE GM 4 wire, 6 wire etc
How did you heat sink the module?

Also if you can, a link to the diagram you used would help---the two pickup wires are polarity specific