alternator ground

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=105246
Printed Date: May 11, 2025 at 5:50 PM

Topic: alternator ground

Posted By: noobie4life
Subject: alternator ground
Date Posted: June 04, 2008 at 4:12 PM

How exactly are the alternators grounded?

Replies:

Posted By: noobie4life
Date Posted: June 05, 2008 at 2:57 PM

What I need to know is if there is actually a wire running off the alternator to the chassis or if the alternator casing itself is its ground? Im asking this because I was thinking of running a ground cable for the alternator if its even worth it?

Posted By: boogeyman
Date Posted: June 05, 2008 at 5:13 PM

the casing itself is the ground

Posted By: jmelton86
Date Posted: June 05, 2008 at 6:02 PM

The ideal place to ground your battery is the alternator case. Most all cars come factory with the battery grounded to the engine somewhere (along with the body and/or frame). This is because the alternator case is 'absolute ground'.

If you are upgrading your Big3, then i'd suggest grounding the battery straight to the alternator case, if possible, as well as the body and/or frame of the vehicle.

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

Posted By: aznboi3644
Date Posted: June 05, 2008 at 7:23 PM

usually there is no factory ground coming off the alternator casing...the alternator is bolted to the block which is in turn grounded to the chassis and battery