The easiest way to hook up HEI is at the key switch. Pull all the original ignition wires out and run one new 10 gauge wire from the dash to the "Batt" terminal of the HEI. Under the dash hook the new wire to the ignition terminal of the key switch. Now take a short piece of the same wire and hook to the start terminal of the key switch, take the other end and hook to the ignition terminal. You now have 12volts in start or run. You need do nothing else. Joe
