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Old 03-09-2016, 10:58 AM
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Default quick simple wiring question

ok so this is just something im unsure about but here we go

so my set up is a 08 eclipse 2.4 with 2 hc1800s one in the back one in the rear. single run of knu cca 1/0 front to back, big 3, now in the back i have alot of lugs going to my rear battery.

a protype 2.5k with 2 pairs of 1/0 ground and power as well as a rf400.2 that i have 0g crimped down into so a total of 4 lugs per terminal 4 positive and 4 grounds. now being the battery only has one ground in the rear. should i ground all the amps instead to there own chasis ground instead of on the battery. or just the rf amp to allow me to have a 2nd ground on the battery instead of the current single ground.

i just feel like with all of them being grounded at the rear bat and only 1 return from the rear bat neg to ground might be a bottle neck
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Old 03-09-2016, 11:36 AM
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Could i suppose. I usually shoot for at least one chasis ground per batt just to put my mind at ease.
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Old 03-09-2016, 02:57 PM
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I ground all my amps to the batteries. I ground each battery separately.
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Old 03-09-2016, 03:46 PM
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Ehhh.... chassis grounds on a unibody car just straight suck nutsack anyways since the cars are glued together with seam sealer and spot welded. Best would be doing a dedicated ground run to the alt case, better would be individual ground runs to various locations in the rear for each ground lead. Good is what you have currently. I have a single 2/0 ofc run from buss bar to frame on my full frame 4runner and amp runs all go to buss bars with a single 2/0 ofc run front to back with big 3+ and I feel fully confident in my electrical. However we are talking full frame vehicle vs unibody grounding points. What is your voltage drop between the front and rear batt with system off car running? That should tell you how much resistance you have between the front grounding point and the rear...
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Old 03-09-2016, 04:22 PM
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Start caring when you get voltage drop or lights dimming or alt whine.
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Old 03-10-2016, 02:46 AM
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Quote:
Originally Posted by graham View Post
Start caring when you get voltage drop or lights dimming or alt whine.
Doesn't that usually mean you don't have enough battery capacity and/ or you need a alternator upgrade?
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Old 03-10-2016, 02:48 AM
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Eh, assuming you wired everything correctly, no need to care unless there are problems imo.
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Old 03-10-2016, 02:55 AM
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Yeah, that's how I also feel about it
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