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Old 03-15-2017, 11:57 PM   #3
RED72blazer
urban fourwheelin
 
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Join Date: Aug 2002
Location: Seattle
Posts: 1,007
Re: buzzing external voltage regulator 72 K5 blazer

Quote:
Originally Posted by VetteVet View Post
Do you have the regulator grounded to the sheet metal and to the alternator?
The alternator and the regulator both have the "factory" grounds installed. I even ran a temporary wire between the 2. No difference.
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1972 K5 Blazer with Cummins 4BT, NV4500 swap in the parts gathering stage.
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