Alternator Q - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Gokart Mozart · 05-20-2011, 10:09 PM

I have a '70 250 6 and have been having electrical issues, mainly my lights would dim when idling at a light. I had the alt and battery checked and the alt was bad. I picked up a new 1 wire alt and then I looked at the existing one and saw this:

yes, the black wire is loose. How should this be wired for a 1 wire setup?

Longhorn Man · 05-20-2011, 10:36 PM

the black wire shouldn't matter in reality, it's grounded to the bracket, ehich is grounded to the block, which should have the neg cable on it.
One wire goes to the battery, that's it. It is an inferior unit to a GM style 3 wire internally regulated unit though

05-20-2011, 10:09 PM	#1
Gokart Mozart Registered User Join Date: Apr 2011 Location: Detroit Posts: 432	Alternator Q I have a '70 250 6 and have been having electrical issues, mainly my lights would dim when idling at a light. I had the alt and battery checked and the alt was bad. I picked up a new 1 wire alt and then I looked at the existing one and saw this: yes, the black wire is loose. How should this be wired for a 1 wire setup? Last edited by Gokart Mozart; 05-20-2011 at 10:11 PM.

05-20-2011, 10:36 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Alternator Q the black wire shouldn't matter in reality, it's grounded to the bracket, ehich is grounded to the block, which should have the neg cable on it. One wire goes to the battery, that's it. It is an inferior unit to a GM style 3 wire internally regulated unit though



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