Is this an odd '67 Dart Voltage regulator?

If there's a draw, it's because it's wired wrong. Francis wiring evidently pushes Ford regulators "on everybody." The thing is, both Ford and Delco had different wiring schemes depending on whether the car used an idiot light or ammeter. "I think" there was an "always on" wire that had to do with sensing Either way I'd replace it. The two-wire simplicity of the Mopar setup is much easier, HOWEVER you have to make sure wiring harness voltage drop does not cause OVER voltage in the system

You can see in this example that there is an "always hot" wire involved

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