George,
I have been having an electrical issue and in searching this on other posts you seem to be the electrical wizard so I thought I would ask you to impart your wisdom on me. I hope you dont mind.

The generator light is dim when the key is in the off position on my 69 Grand Prix (rally gauges). It had been coming on bright while running but lately it just seems to be dim when not running. I have installed a new alternator and tried 3 different external voltage regulators. When I unhook the 4 wires that connect to the regulator it goes from dim to bright while not running. Installed a new engine wire harness from PY. It starts and runs fine. Any suggestions?