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  #1  
Old 01-07-2013, 09:53 PM
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Default 2 Runs of 0g under the car, Advice Please....

So i want to do 2 runs of 0g underneath the car to my rear battery. My question is do i go from alt to rear battery or front battery to rear battery? Also should i do a ground run from front to back as well, or just ground to body in the rear by the battery? I'm doing this because i want to make sure i have the most sufficient power possible to power my saz-3500 @ 1ohm.

Here's the details on the electrical gear i have:
yellow top up front
xs d3100 in the rear
mechman 220 HO alt
AT 0g OFC

Car is a 2005 mazda 3 hatch btw
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-C2 Audio Threatcon 4 12s"
-Sk4500
-Mechman 220 alt w/ big 3; Two runs +/- to back
-Yellow top upfront, 3 batcap 2000s in rear
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  #2  
Old 01-07-2013, 10:00 PM
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You should go from the alt to the optima up front then do runs under the car from te optima to the xs in the back then from te back batt to the amp. Also if its a unibody i heard chasis grounds are a little bette than running a neg from the front to back batteries. But why not just do both
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Old 01-07-2013, 10:00 PM
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run from alt to front batt and then from front batt to rear. and if you have enough wire to do a dedicated ground from front batt to rear that is the best. grounding to frame still has to ground to front. and copper is a better conductor then the steel frame
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Old 01-07-2013, 10:01 PM
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Quote:
Originally Posted by Illicit View Post
You should go from the alt to the optima up front then do runs under the car from te optima to the xs in the back then from te back batt to the amp. Also if its a unibody i heard chasis grounds are a little bette than running a neg from the front to back batteries. But why not just do both
incorrect on grounding. like i said ultimately the ground has to travel to front to complete the circuit
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Old 01-07-2013, 10:02 PM
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ok good to know and it is a unibody btw
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-Mechman 220 alt w/ big 3; Two runs +/- to back
-Yellow top upfront, 3 batcap 2000s in rear
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Old 01-07-2013, 10:04 PM
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if you do want to ground to frame in back id ground at least 2 runs for your 3500 and then another 2 from front battery to frame as well. I ground 2 per 3500 in my setup
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Old 01-07-2013, 10:06 PM
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Yeah theres a video on youtube of them testing the current on a unibody and the chasis ground was better but i have a unibody and im doing both just for a little overkill. Cant hurt
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Old 01-07-2013, 10:07 PM
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well i think ill run one ground from front batt to rear batt then also rear batt to frame as well. so should i ground the amp from the rear battery or from rear ground spot?
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-Yellow top upfront, 3 batcap 2000s in rear
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Old 01-07-2013, 10:08 PM
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The rear battery
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Old 01-07-2013, 10:09 PM
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i ground onto my battery bank and ground my battery bank to frame. either one is fine.
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