grounding?

[TnT_Sounds 10+ year member]

I have a question,

I have 2 runs of both positive and negative going to my battery bank in back and I was needing to know if I ground up front, in back, or both?

Also can I ground my amps to the batteries in back as well or do I need to ground each one to the frame?

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[thegreatestpenn 5,000+ posts]

if u have 2 runs from the front then logic says to ground in the front or else u didn't need to run those wires

 

[sexiewasd 10+ year member]

Just imagine that the batteries that are wired together are really just one bigger battery, ground the really big battery in the front because it is closer to your alternator, and ground your amps to the batteries in the back, because that is closer to the amps, this isn't rocket science.

 

[TnT_Sounds 10+ year member]

if u have 2 runs from the front then logic says to ground in the front or else u didn't need to run those wires

how's that "logic"? You could ground off the batteries in back right?

 

[TnT_Sounds 10+ year member]

Well my friend that went to mobile dynamics audio college in tempe AZ said to never ground the amps to the batteries and said I'd need to ground my batts in back as well.... I didn't think he knew what he was talking about and I've seen people ground to them.

Just thought I'd make sure.. Thanks for the quick responses

 

[thegreatestpenn 5,000+ posts]

if u were gonna ground from the back batts, why did u even run negative wire from front to back? that's why it wouldn't be "logical." you'd in essence have unused ground runs if u didn't use them for connecting front batt negative to back batts negative

 

[kyle7 10+ year member]

you should only need to ground one of the batteries. and you could ground it to the battery up front but ive always been told to keep your ground as short as possibly!

 

[TnT_Sounds 10+ year member]

Oh I gotcha..

Now is it better to run the 2 negative runs to the back? Would it affect my voltage in any way with or without the negative runs?

 

[TnT_Sounds 10+ year member]

Also since my amps have 2 power and ground leads will I need more than 2 grounds off the front battery?

 

[thegreatestpenn 5,000+ posts]

there was a thread on this before. best conducting metal is copper so that is why people use negative runs to the back instead of grounding to the frame in the back

 

[kyle7 10+ year member]

there was a thread on this before. best conducting metal is copper so that is why people use negative runs to the back instead of grounding to the frame in the back

but the front battery grounds to the chassy anyways so i guess i dont understand what the advantage of running a wire that far to ground. idk im still sorta new to high end car audio stuff lol

 

[TnT_Sounds 10+ year member]

Ya I thought it would be more beneficial to ground the back batteries to the frame in back and grounding the front batter in front to the chassis

 

[loopkiller 10+ year member]

Don't question it, just do it //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

/thread

 

[TnT_Sounds 10+ year member]

Don't question it, just do it //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

/thread

Hey thanks for the illustration.

One question though, since both my amps have 2 power and ground inputs. I would have a total of 4 ground runs to the rear batteries, would I need 4 grounds off the rear batteries as well or just 2?

 

[Buck 5,000+ posts]

More grounds don't hurt. I'm going to run 2 runs of ground and still ground the batts in the back. My amps are grounded to the back battery, but the battery is grounded to the frame.