Oh, no! I hope you feel better soon. It's a drag being sick.
Here is what I did regarding the HEI wiring.
http://67-72chevytrucks.com/vboard/s...d.php?t=708975
I should add, with the wire connected to that spot on the firewall connector, check with a voltmeter the wire supplies 12V with key in the on position as well as in the start position.
If the wire connected to that spot on the firewall connector provides 12V only with the key in the on position and not when in the start position, that is because of the internal configuration of the ignition key switch. If you find that situation, you should be able to get 12V during start from the outboard terminal on the starter solenoid. The purpose of that outboard connector on the starter solenoid is to provide 12V during start to the original points distributor/coil.