Voltage regulator location 1966 dart

Hi I have a 1966 Dodge dart And I'm trying to track down where the voltage regulator is. None of my accessories or lights work on the car. And the battery is not charging properly The alternator tester said it was a bad regulator And it's the original style alternator So not internally regulated But I'm hoping that bad regulator is the cause for instrument panel wipers and all lights not working but nevertheless I can't seem to find where the regulator is located any help is appreciated Thank you

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