Oh - we'll need full 12 volts to the Pertronix - tapped from the terminal of your ignition switch (key-on 12 volt source) feeding the pink wire. There is a bullet connector about 3" from your switch we'll need to tap into. You might add that to your list of things to-do. We'll leave the regular resistor wire fed voltage to the coil, since it (your coil) is not designed to see 12+ volts all the time like the Pertronix is.