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Old 04-08-2022, 01:55 AM   #14
VetteVet
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Join Date: Jan 2005
Location: Kalamazoo, Michigan
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Re: 1970 C10 Battery/Alternator/External regulator issue

Quote:
Originally Posted by Chevys4life View Post
Did you ever figure out the sensing brown wire for your external regulator? And if so is your charging system work fine or overcharging your system?
He is missing the brown wire from the firewall to the regulator plug so his alternator will not charge, whereas yours is overcharging. The brown wire is called the exciter wire for the alternator.
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