Hi Nomad,
Mine is using a Pertronix (same idea as a HotSpark) and you can see in the photo that the Red wire with the Red push on connector is connected before the resistor, so it gets the full 12 volts. The stepped down voltage is what comes out of the other side of the resistor and connects to the coil (Red and Green wire). When using a resistor wire, you do need to either run an additional wire from the fuse box, or splice in an additional wire right where the resistance wire begins, not where it ends at the coil. I had to do that on my '74 2002tii that has a resistance wire. Good luck,
John