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any regulator experts?
Posted by: jfreez ()
Date: August 16, 2021 09:58AM

here is a pic of the latest thing I found on my car.
Why would someone put in a diode? I would think if a diode was needed, this would be way undersized for the application. I cant find a ballast resistor in this car, could this be related?



Edited 1 time(s). Last edit at 08/16/2021 10:05AM by jfreez.

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Re: any requlator experts?
Posted by: Lane66m ()
Date: August 16, 2021 10:08AM

Keeping a voltage back feed from turning on GEN light. That is the brown wire going to the instrument panel light.

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Re: any requlator experts?
Posted by: jfreez ()
Date: August 16, 2021 10:15AM

cool thanks for the info. that explains why it can be so small, only 1 light as a load.
I will just make it look nicer as I clean things ups then.

Lane66m Wrote:
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> Keeping a voltage back feed from turning on GEN light. That is the brown wire going to the instrument panel light.

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Re: any regulator experts?
Posted by: RexJohnson ()
Date: August 16, 2021 10:48AM

In '65 the 47 amp alternator had a diode somewhere on the voltage regulator. I believe in late '65 or starting in'66 the diode was built into the regulator and they all had it. Your car should have a resistor wire in the engine harness instead of a ballast resistor.

RJ tools
Salem,Oregon

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