Proform 850 dialing it in closer

Started, warmed up eng and then turned off all the lights in the garage only glow on the hole wiring was a small glow from the cap were i drilled hole in it to see if the rotor was out of faze years ago.
I have done this before, several time on cheep spark plug wires and they glow any where they got close to metal. The eng compartment was in complete darkness. Set there and let my eyes adj to the darkness and nothing except the round hole in the cap.

Thanks tjpatte!
I need to check this off of my list and only took a half hour to do!!!!

Well crap, was hoping that would be the problem and easy fix.

Have you tried disconnecting the alternator and running the car? Maybe the diode is shot and allowing the alternator to pass AC?