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Old 11-17-2018, 03:37 AM
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Default Wiring a second battery?

Hello, I have a roughly 3500 Watt system. I'm my 16 chrysler 200 with a stock 160 amp alternator. Volt meter tests show at idle at full blast I won't drop below 12.2 volts at the battery. I did the big 3 and I have 1/0 cable ran now. I have done some research and I think my best option is to add a second battery. I plan to ditch the spare tire and mount it there but my wiring options confuse me.

I see it is common to run from the main battery to the second battery then to the amp. Well I already have my system set up where my main power cable goes to a distribution block just behind the rear seat and then goes to each amp. I have a spare connection on my distribution block could I hook the second battery there? Effectively putting the amp in between the 2 batteries?

Or could I run another power cord under the car to the new battery and then to the distribution block?
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Old 11-17-2018, 10:23 AM
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Quote:
Originally Posted by Cklump View Post
Hello, I have a roughly 3500 Watt system. I'm my 16 chrysler 200 with a stock 160 amp alternator. Volt meter tests show at idle at full blast I won't drop below 12.2 volts at the battery. I did the big 3 and I have 1/0 cable ran now. I have done some research and I think my best option is to add a second battery. I plan to ditch the spare tire and mount it there but my wiring options confuse me.

I see it is common to run from the main battery to the second battery then to the amp. Well I already have my system set up where my main power cable goes to a distribution block just behind the rear seat and then goes to each amp. I have a spare connection on my distribution block could I hook the second battery there? Effectively putting the amp in between the 2 batteries?

Or could I run another power cord under the car to the new battery and then to the distribution block?
Just replace distro block with a fuse holder. Then run that to the battery. If your distro block is one of the fused one, then run the wire from the 2nd battery to block and then from the block to the amps.

Hope that helps
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Old 11-22-2018, 07:15 PM
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I have a 2005 Dodge Neon with a stock 120 amp alternator, an external voltage regulator, the Big 3+, and 1/0 gauge wire ran from the under hood battery to the back at my distribution block. I too had an extra connection not being used so I wired up two Dekka 98 amp/hr batteries under the sub box in the spare tire well(they each have their own 120 amp fuse). There is a Hifonics amp clamped to 1300 watts running the subs and then a 4 channel amp running everything else.


With the engine at idle the voltage dropped to 13.7 volts when it registered a 137.6 dB on music.


Oh, I also have a constant duty solenoid wired up on the 1/0 gauge wire going to the trunk. This is to isolate the starting battery from the stereo batteries.
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Old 11-22-2018, 08:33 PM
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Oh, and there is 4 gauge wire from the batteries to the distribution block.
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