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how to hook up an extra battery?


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quick question fellas.

okay, so to add 1 extra battery in the trunk of a car/truck/suv whatever, all you need is 1 run of positive and 1 run of negative from the front battery to the rear. and then from the rear you can power your amp from that? or how does it work? example:

xs d3400 in the front

1 postive and 1 negative run to the rear which would be a xs d3100 and then lets say a rockford bd2500 amp to be powered by that rear batt?

thanks guys :)

system is going to consist off 1 18' btl and a rockford bd 2500.

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Sounds good, but if i remember correctly, you'll want to fuse between your two batteries just in case something shorts out. Your vehicle wont go up in flames

I do 2 fuses (ANL) 1 At the front one at the back so if theirs a short anywhere in between your covered.

Edited by EBW

Kenwood KIV-BT900

Front Stage

RF 400-4 Runs off dedicated 4 awg ofc

RE 6.5 125.5.

Lanzar Max Pro 6.5

Boston S60 6.5 components

Rear

Soundstream BX-15

Boston S60 6.5 components

4x Sundown SA8 v1.5

Crescendo BC3500D

2.4 net 28hz

4 runs of 0 gauge

Big 3

HC2400

700ca up front

Singer 350 Amp Alt

No deadener :/

Scytek Galaxy Alarm

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Sounds good, but if i remember correctly, you'll want to fuse between your two batteries just in case something shorts out. Your vehicle wont go up in flames

yep fuse the batteries. you dont really have to run negative though cuz its ground to your car and engine so mostly run few grounds to body in back and its good.

1996 dodge stratus

audiopipe 3k

2 15 american bass xds

10 door speakers threw out car

kenwood head unit.

spl scores from trunk: 147.7db on 2k

extreme out side window-129.2db

kaos 3 min average music-138.3db

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Sounds good, but if i remember correctly, you'll want to fuse between your two batteries just in case something shorts out. Your vehicle wont go up in flames

yep fuse the batteries. you dont really have to run negative though cuz its ground to your car and engine so mostly run few grounds to body in back and its good.

really, no need for a negative run?

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I run a neg back to the frame then a run from my amp/batt ground to frame at the same location. And 2 300 amp fuses should be good 1 up front one at rear batt

Edited by EBW

Kenwood KIV-BT900

Front Stage

RF 400-4 Runs off dedicated 4 awg ofc

RE 6.5 125.5.

Lanzar Max Pro 6.5

Boston S60 6.5 components

Rear

Soundstream BX-15

Boston S60 6.5 components

4x Sundown SA8 v1.5

Crescendo BC3500D

2.4 net 28hz

4 runs of 0 gauge

Big 3

HC2400

700ca up front

Singer 350 Amp Alt

No deadener :/

Scytek Galaxy Alarm

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I run a neg back to the frame then a run from my amp/batt ground to frame at the same location. And 2 300 amp fuses should be good 1 up front one at rear batt

so you run a negative wired from the front batt thats grounded in the rear of the vehicle, and you ground your amp and the rear batt to the same location?

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