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Old 04-12-2013   #1 (permalink)
Dirtydonkey
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Join Date: Jul 2011
Location: Lapeer, Mi
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Dirtydonkey is still in the green - This is good
Default Electrical: to much or not enough.

Howdy folks, I planing a new system out, bigger then anything I have attempted before, and I plan on upgrading all my electrical before I even purchase the amp and subs. Too many times have i rushed a system together and just looked sloppy and i felt like a idiot sitting at a light with my light dimming to the beat.
Im sure this is common knowledge for some of you, but im not sure. I have read thru alot of the stickies and got some good info from there, i just need reassurance I guess.

My Car currently:
2004 grand prix
3.8l
stock alt 125 amps
Big three ran in 4 gauge
4ga Power wire
my ebay special amp VVME inno 1500 dims my lights
amp is powering 1 15" kicker cvr at 1ohm

System im looking to install:
2 AQ HDC3'S 12'S
2 AQ Q1-2200D'S

My proposed electrical lay out is:
HO alt 200-300amp
2-3 XS power D3400's one under hood and 1 or 2 in trunk
2 runs of OFC 0ga from + and - front to back
change big three over to OFC 0ga

based off of 4400watts divided by 14.4 (high i know) at 80% efficiency im looking at 381amps just on amps not including stock electrical on top of that.

Is that enough juice or possibly to much? the biggest system i have ran before was a RF T-1500bdcp pushing 12" stroker and i used stock battery in front and kinetik hc1400. seemed ok, but i didn't have voltage meter ran so not really sure. And yeah i had a extra battery but wasn't a hundred percent sure on what it did or if it was even appropriate for my vehicle since I still had wet cell up front.

Since i am running 2 lines between batteries should i also run to lines from alt to first battery?

Could I go with 200 amp alt with the three batteries or should I look at 270-300amps still. I found 200 amp alt on knu koncept website for $255, any one have experience with their alts? Other then that I am looking at $400 and up, dont want to skimp on the alt but if i can still keep price tag down i would prefer to do that.

With running my - back battery to front battery that is grounded with big three should i still run a extra ground from the back batteries to chassis? its unibody so it will suck either way but would more help?

So in conclusion To much or not enough? I don't want to Build a system and just screw everything up cause i skimped on the electrical but as im figuring everything out im looking at spending more on electrical then i am on subs and amps

thanks in advance i know there are some great minds on here when it comes to this stuff, i appreciate any and all help


Also any suggestions on head units would be appreciated too, its a double din but i have a single in there now so either one would be ok. Thanks
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