Ockham's razor strikes again... the new voltage regulator worked! As soon as I compared the new regulator to the old one, I knew the old one was broken... the small tab that connects to the positive contact inside the alt was broken off... so, I guess there's more that can go wrong with the voltage regulator than just worn brushes!

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1985 300DT, Classic White, California, 175K
1984 300TD, Classic White, Euro, 285K


"When nine hundred years old you reach, look as good you will not. Hmm?" - Yoda