Chris, the ballast wires have to be connected because with a 12V coil, if you still leave the ballast resistor there, the coil will be running with only around 9 Volts. When you join them, the coil will get the full 12V and not just when starting but during "run" also. You can also get the distributor "B" terminal power from that connection too. Just run another wire from the joined ballast resistor wires to the distributor.