how to install a second battery??

[72camaro]

ok in my 94z28 ive got a single orion XTR pro series 12'' sub and its running off a 1800 watt amp, problem im having is when the heavy bass starts going my interior lights start to flicker and the battery gauge starts to jump up and down, and it effects the cars idle when at a stop, now i already have a second battery i want to put in the car to run the amp off of, but my question is how do i go about connecting the 2 batteries so that they both will keep charged up? anybody have any info, will be much appreciated thanks

 

[mmadden55]

Wire it in parallel, ie positive to positive ground to ground like you were jumping it off.

 

[Brando]

^^^^ and get a bigger alternator

 

[mmadden55]

^^^ GM makes a nice 140 amp alternator.

 

[1QUICK4]

^^^^ and get a bigger alternator

This

 

[Bowtie]

I'm assuming cost is an issue for him so he probably wants to take the cheap route.

Although a second battery is good choice and a better way to go, a capacitor is another option that is cheaper and will involve less work (not by much). If cost is not an option, do it the proper way and go with a secondary battery.

 

[72camaro]

so im going to be in need of a bigger alternator? and ive heard that capacitors dont stop the lights flickering issue

 

[Ike Turner]

so im going to be in need of a bigger alternator? and ive heard that capacitors dont stop the lights flickering issue

Check your local options. Most alternator shops charge $1 an amp to upgrade your alternator, and they give you a warranty.

 

[72camaro]

you can actually take your existing alternator and have it re built?

 

[mmadden55]

Yes you can. But GM makes a factory 140 amp alternator that you can buy at any auto parts store.