got into a discussion on another forum: best place for a ground

[CBFryman2 5,000+ posts]

Why not do both?

Ground Loops.

 

[NoviceGuru]

NoviceGuru: can someone explain to me what you mean by running the ground to the battery. maybe a picture of the two different ground set ups. i have only seen a amp grounded to the chasis and i am having a hard time painting a mental image of what running a ground to the battery would look like. and yes i know you not talking about running your amp ground to your neg post.

*prepares for onslaught*//content.invisioncic.com/y282845/emoticons/ready2go.gif.6557fa3d88b9eaca9c7b8efb9cbd02ed.gif

 

[Prowler573 5,000+ posts]

NoviceGuru: can someone explain to me what you mean by running the ground to the battery. maybe a picture of the two different ground set ups. i have only seen a amp grounded to the chasis and i am having a hard time painting a mental image of what running a ground to the battery would look like. and yes i know you not talking about running your amp ground to your neg post.

*prepares for onslaught*//content.invisioncic.com/y282845/emoticons/ready2go.gif.6557fa3d88b9eaca9c7b8efb9cbd02ed.gif

Umm...actually, that's exactly what they're talking about. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[05AztecRed 10+ year member]

Umm...actually, that's exactly what they're talking about. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

x2

 

[NoviceGuru]

Umm...actually, that's exactly what they're talking about. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

haha really? why would running it to the negative be better then a short run to the chasis.

*ashamed*//content.invisioncic.com/y282845/emoticons/hide.gif.2d479cfd917eedfe201353b91522ceab.gif

 

[supa_c 5,000+ posts]

The chassis ground is only as good as the wire coming off of the chassis to the battery.

Thats why people do the big 3.

 

[MTXThunder9500 10+ year member]

so if you dont have the big 3 done then stick with a chassis ground? and if you do have the big three then its safe to run the wire from front to back?

 

[Lil Poot 5,000+ posts]

i never had any whine or noise grounding both amps to my front battery in my ***** am, or to the rear in my explorer, although that wire was only about a 20 inches long.

 

[supa_c 5,000+ posts]

so if you dont have the big 3 done then stick with a chassis ground? and if you do have the big three then its safe to run the wire from front to back?

If you want to, yes. You dont need to, but doing the big 3 is much cheaper and eaiser.

 

[ultimate157 5,000+ posts]

so if you dont have the big 3 done then stick with a chassis ground? and if you do have the big three then its safe to run the wire from front to back?

Actually the opposite.

If you have 4ga cable running to your amp, and you ground with a 4ga cable to the chassis, and your battery to chassis ground is only 8-10ga ... then you're bassically grounding your amp with a 10ga wire.

If you have already upgraded the battery to chassis ground to 1/0, then you can ground the amp in the rear with 4ga

 

[lilmaniac2 5,000+ posts]

guess what the silver wire goes to

 

[supa_c 5,000+ posts]

hooker wire sucks

 

[lilmaniac2 5,000+ posts]

k?

 

[Thnking 10+ year member]

haha really? why would running it to the negative be better then a short run to the chasis.
*ashamed*//content.invisioncic.com/y282845/emoticons/hide.gif.2d479cfd917eedfe201353b91522ceab.gif

The overall goal of grounding should be 2 things:

1 Keeping the resistance at the grounding points and over the wire length to a minimum per setup.

2 Keeping the grounding resistances as equal as possible.

However someone chooses to run them, those 2 criteria should be met. The problem arises with multiple electronics in a car that when someone grounds some of the electronics to the (-) post of the battery and some to the chassis, the resistances are unequal.

 

[theothermike 10+ year member]

quick ?

if i run 1 1/0 ground wire to the chassis from negative terminal on battery and also a 4 gauge ground wire from same negative terminal to same ground or maybe different ground on chassis, would that be same as running a bigger wire? or do i need to buy bigger wire and just run 1 run. Because my terminal has 2 1/0 inputs 1 4 gauge input and also a 8 gauge input so im just wondering.

Mike