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69GMCLonghorn · 06-24-2009, 01:18 PM

I had the same problem with my truck when I was running the regulator. I would make 100% sure that the external regulator has been bypassed. If it's internally regulated, as stated above, you probably just need a new alternator.

06-24-2009, 01:18 PM	#4
69GMCLonghorn Registered User Join Date: Dec 2006 Location: Porter Ranch, CA Posts: 978	Re: +18v !!!! help! I had the same problem with my truck when I was running the regulator. I would make 100% sure that the external regulator has been bypassed. If it's internally regulated, as stated above, you probably just need a new alternator.