[red67]

Thanks very much for the tip. I had thought about the AMA data and I believe I have a copy of the file somewhere as I'm pretty sure I downloaded it sometime in the past. I was going to check it but never got around to it. The AMA data was issued on 10-7-66 which is the same date as the harness number was changed in the AIM. Possibly a coincidence. Looks like the 039 coil on my car is original equipment and meets the date criteria. I'll measure the resistance of the ignition to coil wire tomorrow. Today I measured another 1967 Camaro harness I have and it measured 1.8 ohms exactly as per the early specifications. I also measured a 1968 Nova and a 1967 Firebird 400 that I have and both were 1.5 ohms. Not sure what the spec is for Firebird but the 1968 Nova spec is 1.35 ohms.