GM H.E.I. (High Energy Ignition) style distributor. Order the correct harness part # for your... see moreGM H.E.I. (High Energy Ignition) style distributor. Order the correct harness part # for your car along with this modification part #. The harness you need to order is usually the Engine Harness, but can be the Dash Harness. To verify, check the wiring going to the ignition coil and ballast resistor (if applicable) in your car.
adapts 1954-56 harnesses to use 1957-75 type motor (terminals on motor in a "T" pattern)adapts 1954-56 harnesses to use 1957-75 type motor (terminals on motor in a "T" pattern)