62 Valiant 200 / 170 cuin /6 - Odd smell - then dead battery

SO YOU'RE SAYING I NEED TO GROUND THE BRUSH LIKE THIS? IF SO, I ALREADY DID THIS....

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Yes. I assumed that was needed because you told charlie it had two brush terminals.
But you've already grounded one. so that's not it.
Checked running .... getting battery voltage everywhere
I also assumed by this^^^^ that the voltage measured with engine running was around 12 Volts.