additional chassis battery ground wire

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Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=109185
Printed Date: April 29, 2024 at 9:37 AM

Topic: additional chassis battery ground wire

Posted By: anewman
Subject: additional chassis battery ground wire
Date Posted: November 23, 2008 at 8:40 PM

I was wondering if there was likely to be any problems caused by adding a wire to connect the chassis and the battery negative terminal. This would be in addition to the chassis -> engine connection, and the engine -> battery connection.

Thanks in advance.

Replies:

Posted By: reax222
Date Posted: November 24, 2008 at 1:35 AM

I haven't had any. I have the stock wire, my winch provides a battery-chassis ground on the very front and I have another wire from the battery to a bolt about 8" from the battery. The more grounds you add, the more paths the voltage has to return to the battery so there should be less potential between spots.

Posted By: benjiboy
Date Posted: December 09, 2008 at 10:08 AM

You really can't have too many grounds. Especially if the factory or other grounds are old and/or questionable.

Posted By: anewman
Date Posted: December 09, 2008 at 10:22 AM

benjiboy wrote:

Especially if the factory or other grounds are old and/or questionable.

Exactly why I was planning to add a new one :)

Posted By: pro2aria
Date Posted: December 17, 2008 at 1:10 AM

True adding additional ground wires provides a larger path for return current to flow back to the battery, but remember that If you upgrade only the ground and are not upgrading the battery positive then any components tied in to the stock wiring are not gaining much if any. Big three upgrade is the best. Once the car is started the alternator produces the supply current, so upgrading the ground from the alternator to the frame is equally important. This is true of the feed wire from the alternator to the battery as well. Might as well since you're already in there.