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Wanted: 74 620 voltage regulator


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No one had it, Napa can get it tomorrow.

I was hoping for a used Datsun one locally but no one stepped up yet.. at least you can take those apart and clean/adjust it, the aftermarket one on my truck now is sealed in some plastic material and kickin out 14+ volts now..not good on my old wiring harness.

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No one had it, Napa can get it tomorrow.

I was hoping for a used Datsun one locally but no one stepped up yet.. at least you can take those apart and clean/adjust it, the aftermarket one on my truck now is sealed in some plastic material and kickin out 14+ volts now..not good on my old wiring harness.

 

The regulated output for the '74 alternator is 14 to 15 volts. Buying a new regulator that does the same thing is a waste of $$$

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14v at battery when running is good.Desired 12v voltage is 12.8 on a fully charged battery.Under load and charge you want to see a constant 13.5-14.5When you need a regulator is when it wont stop charging.The battery boils over at a constant 15v+.

I cant figure why the voltage would step up after the alt.That seems impossible.

Do you have a multi meter or voltage meter device?

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