I have a '69 Z28 I am restoring. When I try to start the engine, the ignition switch will not engage the starter. New starter motor (jumped it at the starter.... works fine) ..... nothing. Have traced wiring and ruled out the clutch safety switch. Trying to figure out where the contacts are that come together when you turn the key to start. I know it is a mechanical linkage down through the steering column.... can someone help?? Thanks!!