what is the big 4

Home / the12volt's Install Bay / Car Audio / what is the big 4 (

Topic Closed)

Welcome Guest :)

Members

< Prev Page < Prev Topic Next Topic >

DYohn

Moderator - Posts: 10,741

This member has made a donation to the12volt.com. Click here for more info.

This member has been recognized as an authority in Electrical Theory. Click here for more info.

This member has been recognized as an authority in Mobile Audio and Video. Click here for more info.

Joined: April 22, 2003

Location: Arizona, United States

Posted: December 20, 2007 at 2:58 PM / IP Logged

n2audio wrote:

aznboi3644 wrote:

-alt casing to engine block..

Why would you do this?

Is your alt not already attached to the engine via large bolts and/or brackets?

Yes, in most cases, but that does not mean the bolts provide a good ground return path. The alternator casing is the "true ground" in your charging system.

Support the12volt.com

forbidden

Platinum - Posts: 5,352

Joined: November 01, 2003

Location: Alberta, Canada

Posted: December 20, 2007 at 3:49 PM / IP Logged

99% of installers and pretty much every single DIY guy on the block does not measure the return resistance reading. This needs to be done to ensure that you have a good ground. Again, a good ground is not necessarily the closest bolt in the trunk of a car. Take the time and meter the return resistance, then post the results.

Top Secret, I can tell you but then my wife will kill me.

hardwarz

Member - Posts: 26

Joined: October 04, 2004

Location: United States

Posted: December 21, 2007 at 1:27 PM / IP Logged

still_walkin wrote:

So is it worth it. So instead of wiring the cars chasis he was wiring directly to the negitive post on the battery.

It's worth it if you have real ground loop problems. Sometimes it might be your only solution to that kind of problem.

Search for ground loop if you need more help on that topic.

Hardwarz

aznboi3644

Gold - Posts: 2,600

This member consistently provides reliable information

Joined: May 01, 2006

Location: United States

Posted: December 22, 2007 at 3:56 PM / IP Logged

DYohn wrote:

n2audio wrote:

aznboi3644 wrote:

-alt casing to engine block..

Why would you do this?

Is your alt not already attached to the engine via large bolts and/or brackets?

Yes, in most cases, but that does not mean the bolts provide a good ground return path. The alternator casing is the "true ground" in your charging system.

Indeed...I grounded the alternator to the battery negative with 0 gauge wiring....This is a better ground path than between the alternator bolts and the grit and grime that is between the bolt and threads

< Prev Page

Sorry, you can NOT post a reply.
This topic is closed.

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

what is the big 4

Sorry, you can NOT post a reply.This topic is closed.

Sorry, you can NOT post a reply.
This topic is closed.