want to run a 2nd battery in the back

[05fronty 5,000+ posts]

my batteries are grounded in back, been like that for over a year and no problems

 

[SicAudio 5,000+ posts]

i have 2 batts in the back no run to the front 3.5 years and never drop below high 12's and usually sit at 13.8 or more. its a preference not a rule.

 

[Buck 5,000+ posts]

I never dropped below 13.5 with one batcap 2000 and run of power and ground with stock alt.

 

[SicAudio 5,000+ posts]

exactly my point i have a stock alt and 2 small 35ah batts on 4kw and no issues

my wife has 2800 rms on 1 20ah and a stock alt same thing we never drop to 12's unless we are hammering it hard or burping it.

 

[Savag3 10+ year member]

I weld bolts to the passenger side frame rail, in front and some in back. Then gound to the bolts, it ties the grounds together on the passenger rail like a circuit , this and the big three ground on the same rail . .

edit : i have heard from several people , even matt from Mechman that the stinger etc. digital voltage meters arent fast enought to keep up with drops , and that apparently voltage spikes much lower and then back up before the stingers can even read it ? ?

 

[SicAudio 5,000+ posts]

good advice and a shitload cheaper than a 20 foot run of 1/0 lolz

 

[bhsdriller 10+ year member]

nothing wrong with running a ground from the front if you have the extra money it never hurts but having it as an only ground is something only a " moron " would do which is what 9ball said to do, and that is incorrect. he said have all 1 common ground for all batts and amps all from the front. wrong wrong wrong

Wait...I have it as an only ground. The front and back batts are connected than the amps are grounded off the back batteries

//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[SicAudio 5,000+ posts]

not very smart then you have all the resistance on 1 wire

you should always ground the battery where it is installed the run from the front is just an extra not an only. what happens if it gets cut or corroded? no more ground and now u have massive feedback into the amp and b00m

 

[CMattox23 10+ year member]

What is so hard to understand? You make 2 runs from your front battery to your back battery one pos and one neg with a neg ground at the back battery with the pos run fused both front and back no more then 18 inches from the battery. i think my 10year old son could under stand and do it with out pictures.

Couldn't you give this advice the first time around instead of bein a dick about it? The first time I read that thread the fuses and the amount of them threw me of and confused me. Thanks @ sicaudio and others who actually helped try to explain this. I ended up not fusing it anymore as was told by this shop and two other's that it's kinda optional. Ran my positive from 1st to 2nd batt, then from 2nd batt to amp, in which that wire is less than a ft. long. Two separate grounds, one for the 2nd battery and one for the amp itself.

 

[SicAudio 5,000+ posts]

that will work just fine Cmattox

and you r very welcome

ask anytime dude if i dont respond just pm or email me i am always willing to help sum1 especially the ones with manners such as you

 

[Villeza1 10+ year member]

Couldn't you give this advice the first time around instead of bein a dick about it? The first time I read that thread the fuses and the amount of them threw me of and confused me. Thanks @ sicaudio and others who actually helped try to explain this. I ended up not fusing it anymore as was told by this shop and two other's that it's kinda optional. Ran my positive from 1st to 2nd batt, then from 2nd batt to amp, in which that wire is less than a ft. long. Two separate grounds, one for the 2nd battery and one for the amp itself.

Whatever works. Just make sure you have a good ground.

 

[CMattox23 10+ year member]

Whatever works. Just make sure you have a good ground.

Thanks man

 

[Villeza1 10+ year member]

Thanks man

No prob, GL

 

[quins90lac 10+ year member]

Couldn't you give this advice the first time around instead of bein a dick about it? The first time I read that thread the fuses and the amount of them threw me of and confused me. Thanks @ sicaudio and others who actually helped try to explain this. I ended up not fusing it anymore as was told by this shop and two other's that it's kinda optional. Ran my positive from 1st to 2nd batt, then from 2nd batt to amp, in which that wire is less than a ft. long. Two separate grounds, one for the 2nd battery and one for the amp itself.

wait you ran positive to positive on the 2 batteries with out a fuse. That's an electrical fire waiting to happen the fuses are there to protect the wire and the batteries if they should happen to short out. And i would have given it to you had you of said that you had read the tutorial and that you had some questions about it. But all that aside get some fuses before you destroy some thing i would hate to see you lose every thing you had worked for just because of some $20 fuse holders

 

[CMattox23 10+ year member]

wait you ran positive to positive on the 2 batteries with out a fuse. That's an electrical fire waiting to happen the fuses are there to protect the wire and the batteries if they should happen to short out. And i would have given it to you had you of said that you had read the tutorial and that you had some questions about it. But all that aside get some fuses before you destroy some thing i would hate to see you lose every thing you had worked for just because of some $20 fuse holders

Na brotha I do have a fuse down the positive run. It's 6 inches down the run of wire from the 1st battery. I was told that that was sufficient by three different shops, but who knows, that's why I'm asking. And it's all good man, I should have said I didn't understand the tutorial.