big 3 wiring upgrade

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mike243

Member - Posts: 1

Joined: October 20, 2012

Location: Ohio, United States

Posted: October 20, 2012 at 10:11 AM / IP Logged

I plan to do a big 3 upgrade, i am wondering if it would be a good idea to run my battery ground straight to the alternator case seeing as how the case is the "true ground". Any thought comments or advice would be very helpfull.

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oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: October 21, 2012 at 2:16 AM / IP Logged

True ground? Only when the alternator is fully supplying the load.

And that's assuming "true ground" means the "most negative" voltage. For audio systems, the "desirable" ground maybe osme other "singular" point.

But IMO it's semantics anyhow. There should never be a big difference between alternator-case ground and engine ground etc.

And surely anyone that argues for such an "absolute ground" would tell you to connect to the stator - NOT the case? (Whether that's Y or delta...)

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DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: October 21, 2012 at 10:40 AM / IP Logged

Your battery ground should connect to the vehicle chassis, as should the engine ground which is also the alternator case. Read the Big 3 upgrade guide in the Hot Topics forum.

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big 3 wiring upgrade

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