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Dude,
Quit checking molecules and stuff. You have a bad voltage regulator. Disconnect your battery. Remove your alternator and replace the regulator.
You will not be able to detect a bad regulator with a DVM. It will not spot a bad diode within the regulator. Your problem is that the voltage coming out of your alternator (the output is the regulator) is all over the place and makes the electronics in your car do really weird stuff.
Your car did not develop fantom current draws overnight. Don't overthink this. This maybe a Porsche, but its really just a car.
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