Is this really all you have to do to add a 2nd bat?

[CrazyKenKid 64]

after I did the big 3 I did a little test, first with the ground run and then without it then I also converted my ground run to a positive run! guess which test I stuck with?

I stuck with the third test!

So i initially started with the JUST a positive and negative run from front to back and my voltage held good I did suffer from lighting dimming though on a prolonged bass line on some songs.

From there I did the big 3 and my dimming issue was fixed but I still had under 13-12 volts when playing heavy bass lines and what not

Then I converted that ground to a positive run (added some fuses after words) and now I hold a great 13 + volts all day and I have no dimming at all!

for the big 3 I did it all in 1/0 awg wire and I also did all 3 steps, battery grounds, alt grounds, engine grounds, and I even ran a bigger positive run from alt to battery.

So a ground run could help depending on what is going on! heck just try it like I did and do as you see fit!

[djtomczak 5]

Stock alt, stock wiring, stock battery all ran my 1500w amp fine with pretty steady voltage. You don't really need another battery unless your pushing a lot of power or have a terrible charging system.

[CrazyKenKid 64]

or your lights dim like a theater lol! and if they do some times the big 3 helps fix that!

[pmureika 31]

Put the best agm type battery you can for a starting battery. They have a better ah output compared to a cheaper standard starting battery.

[Julian 641]

after I did the big 3 I did a little test, first with the ground run and then without it then I also converted my ground run to a positive run! guess which test I stuck with?

I stuck with the third test!

So i initially started with the JUST a positive and negative run from front to back and my voltage held good I did suffer from lighting dimming though on a prolonged bass line on some songs.

From there I did the big 3 and my dimming issue was fixed but I still had under 13-12 volts when playing heavy bass lines and what not

Then I converted that ground to a positive run (added some fuses after words) and now I hold a great 13 + volts all day and I have no dimming at all!

for the big 3 I did it all in 1/0 awg wire and I also did all 3 steps, battery grounds, alt grounds, engine grounds, and I even ran a bigger positive run from alt to battery.

So a ground run could help depending on what is going on! heck just try it like I did and do as you see fit!

I only grounded m engine block and to my front batter then ran the + wire back straight off my alt and my voltage is much better.

[Infinite913 381]

I can get you a juicebox battery for a great price with free shipping

[pmureika 31]

I can get you a juicebox battery for a great price with free shipping

You didnt answer his question.

[Green4Gold 0]

There are plenty of threads on adding extra batteries,how to wire them,& other details all you have to do is search

Edited February 19, 2012 by Green4Gold