Okay, I have this ’69. HEI ignition, external voltage regulator. There is no header wrap or insulation between the starter and the headers. The engine wiring looks like it was done in junior high shop class, one color of wire, and an electricians wire nut, different color wire, another wire nut, repeat. On short trips of a few blocks it’s fine. If it runs for a while, when it heats up, ten miles +, or maybe 20 minutes or more, when you shut it down it won’t start back up. You turn the key and nothing, not a click, absolutely nothing. Sometimes when it sits a while it will start other times it won’t. When it won’t, I can put a voltage meter on the battery and get 12 volts. If I put jumper cables on the battery I get 12 volts at the other end on the clamps, yet when I touch the clamps I don’t get a single spark, but put the clamps on the battery in a vehicle that it running and the Camaro will turn over just fine. I’ve got an engine wiring harness and starter heat shield ordered, should be here later this week. I wondered, does it seem normal that I would get a 12 volt read at the clamps of my jumper cables when the other end is hooked to the battery in the car but not get a single spark when I touch those clamps? (Hope that all made sense) Any ideas what might be going on?