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eBay-aholic
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510 Posts
Discussion Starter #1
Anyone have pics of how they did the BIG 3 upgrade on their NBS truck/SUV.

I'm talking about:
battery positive to alternator,
battery negative to chassis,
block to chassis

The battery positive to alternator is a no brainer, but the chassis ground is another story. The factory battery ground goes to a bolt up under the radiator. Is there another place that someone has used?
 

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Wanna B Jack o all Trades
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9,823 Posts
I drilled a hole and tapped out the threads for a nice bolt and backed it up with washers and a nut on the backside of the frame for my ground. I also have a 4 ga from the alt to battery
 

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Registered
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169 Posts
Out of curiousity, what does this upgrade accomplish?
 

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eBay-aholic
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510 Posts
Discussion Starter #4
It's creates a better power and ground path for the vehicle especially in high powered stereo systems. The typical power and ground cables are roughly 6-8 gauge. By upgrading the wire to a larger size, the current can flow better.
 

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Wanna B Jack o all Trades
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it will help some. The more power availible to the amp the less voltage drop youll get when the subs hit. Alot of times its better to upgrade those 3 and get a new battery like an optima than get a cap or 2.
 

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trucknut
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412 Posts
Yeah, Ive noticed that my voltage doesnt drop as bad with the yellow top, and I have the wire to upgrade the big three, but I havent yet. I think this will fix my small voltage dips until I get a new alternator.
 

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eBay-aholic
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510 Posts
Discussion Starter #7
DONE :thumbsup:

Optima yellow top (a bit dirty) with Audiopipe battery terminals. The wire is Stinger red and silver 0 gauge. The red goes from the battery to the alternator and the 2 silvers goes from the battery to the chassis ground and from the block to the factory ground on the firewall.


 

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GMFS slowest truck :read:
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5,501 Posts
Now i LIKE that setup...really nice. how much did all that set you back, if you dont mind me asking?? and where can u get those audiopipe terminals...thats something i should really look into when i get a job again...ohh yeah, nice battery...i got the same one :rocking:
 

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eBay-aholic
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Discussion Starter #9
I got the Audiopipe terminals off of eBay for around $20ish after shipping:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=50549&item=5707754882

The rest of the stuff I had lying around from a few big systems I did. Here's what I used:
4 Stinger Expert Series 0 gauge ring terminals ... $8/ea
approx 5' of red Stinger Pro Series 0 gauge wire ... $2.50/ft
approx 10' of silver Stinger Expert Series 0 gauge wire ... $2.50/ft

I also used about 6" of 1" heat shrink that I got from Fry's Electronics for $7 for 5'.

Wire is pretty much wire, so if you can find some 0 or 4 gauge cheap, then use that. Also, you can use less expensive ring terminals too.
 

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GMFS slowest truck :read:
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Damn...that wasn't a cheap project by any means...i think advanced sells 0 guage for around $1.80 a foot, which even then, would be 25 bucks for 15 feet of wire...its a nice investment tho.
 

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eBay-aholic
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Discussion Starter #12
kryptonite said:
You said this was for NBS....is it an issue for my OBS too?
All vehicles can benefit from the BIG 3 upgrade if your running a high power stereo system.
 

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Wanna B Jack o all Trades
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thats why they sell that Hyperground kit, it helps the engine, stereo, lights and everything in general
 

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GMFS slowest truck :read:
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I went ahead and did the upgrade from my alt to my pos batt terminal...2 gauge :rocking:...need to finish up the rest, im just not too worried about it right now since i only have a 350 watt amp...lol...no big power yet
 
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