Extra battery

[footeyo86 10+ year member]

I had 96 Lumina and had: 3000 watt mono block Boss Blade Amp, 4000 watt Audiobahn Immortal 12" sub, extra battery, isolator in the trunk. Inside the car I had like 5 switches; 1 powering 3 neons,2 fuzz buster,3 vents leds,4 another 8led light,5 cigarette lighter power. The setup looked like this. Meaning I had 2 0awg wires running from under the hood back to the trunk.

All 0 awg wire n with fuses in correct locations

I now have a 98 Lincoln continental; same amp, now a 4000 watt cerwin vega stroker 10" sub, a capacitor and a optima battery under the hood. Still have everything from the Lumina. I want to only add 2 switches with low power consumption. Waiting for warm weather to install.

I dont want to have to run 2 0awg wires through the whole car again. Thats why I bought a cap. I have been reading and seeing everyone says trash the cap.lol.

My question is:

Can the cap serve some purpose? Wanna use it for voltage meter.

Is there a way to install a second battery efficiently without an isolator n such?

I want to use as little trunk space as possible.

Can I get away with just an optima battery under the hood?

Any help is appreciated!! Thank You

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[terra 5,000+ posts]

dont need isolator

 

[PSturmer 10+ year member]

you may want to connect all the negatives together with the same gauge wire as the positive current instead of grounding to chassis.

 

[Slamminsound]

If you have an extra battery or a REALLY good battery, then a cap wont do anything for u. I laugh at all these stupid kids with sony explodes and bazooka crap with these .5f cap! ahahha those things dont do anyhting for u except hurt ur alternater bc it has to keep recharging it so much over time it will fry the alternater. any cap from.5 to a 4F cap doesnt help.

 

[na_rsx 10+ year member]

do what i am going to do, i have a single run of 0 gauge going to the back, i have a little stinger spv20 battery in the back. I plan on connecting the + run to the + battery, ground the rear battery to the chassis. then connect the amps + and - to the rear battery directly.