The wires that connect to the ballast resistor need to be making a connection, whether they're spliced together, or connected to a gutted ballast, or the ballast is in place.

My 12v key operated source is the original coil positive like the instructions say to do, and I took my ballast resistor apart and soldiered a wire between the two terminals, then filled with epoxy.

Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street