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Upgrade Ground Cable DIY

58K views 24 replies 17 participants last post by  Blasirl  
#1 ·
This is a little DIY I made for upgrading your battery ground. I have read and heard that the Cruze ground system is not that good. So I upgraded it. This should help with upgraded sound systems, HID's, Ignition Coil (spark blow out), battery charging and more. It is very simple and only cost me about $25. I got lost of pictures and if you have questions just ask!



First I gathered the parts...I got a 4awg ground distribution block from Best Buy for $10. I liked this because it looks clean and can be added to later if needed. Than from the auto parts store of your choice I got 4awg Ground cable 49" long and last 2 (made in china) 4awg eyelets. $15.




Now I cut the cable in half and stripped off 1/2" to 3/4" of insulation off both ends of the now cut in half cable. Yes I did not use the factory eyelets that came on the cable. I liked the China one's better.



Now I did a test fit to make sure I took enough insulation off to fit the eyelets.




Now using soldier and a small torch. I heated up the eyelet filling it with lots of soldier and stuck the cable down into the hot soldier. Hold it there for about a minute so the soldier will set. Be careful its HOT. Do this to the second cable as well.




Now use shrink tube to finish off the cable and eyelet for a clean and water tight fit.




It should look like this and again do the same thing to the second cable!




Now take the other end of the 2 cables and insert them into the ground block. Tighten them down and they should look like this!




Now with everything connected and cool to the touch, let's check the resistance. .0 to .3 will work.



On the car now i drilled to small 3/16" holes just to the right of the hood latch on the engine side. I then tapped them out using a 6m x 1.0 tap. I like this location because it's not to easy to see...all but looks stock!




I installed the block and tighten the bolts to about 89"lbs...Not to tight!!! When done it should look like this.






 
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Discussion starter · #2 ·
This setup is a 3 point ground system. 1 Battery, 2 Frame and 3 Engine. I connected the one cable end to the battery ground like this.




And last connection to the engine just behind the intake to the turbo!





When done it should look like this. Just about looks stock


 
Discussion starter · #8 ·
Everything looks good. I will be doing this when I upgrade my headlight harness. One question, would the bolt just below the oil fill cap work better so the wire isn't draped over the motor?


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that would be fine. you can go with any length wire you want to find a better place to attach it. You can even use different color wire. Some like to use the amp wire left over from installing an amp cause of the cool blue or red they use in the kits. what ever works for you!
 
Discussion starter · #9 ·
This extra grounding thing has been the biggest placebo thing over the past 15 years. The whole body is a ground and doesn't take much grounding. Extra grounding will not do anything for performance. Coil performance is dictated by the the amount of coiling (and capacity of said coil before fireing) and electronics. Grounding has zero effect on plug performance. What counts is the quality of the ground, not more of it.
Ground Game
Electrical grounding kits like HKS' Circle Earth kit are a bit of a mystery, but they needn't be. Simply imagine your car's grounding system, and then improve upon it by adding several more grounding points. The results decrease electrical noise and can even smooth out an older car's idle and produce more power through a stronger spark.

this DIY cost only $25...HKS is $150.
 
Discussion starter · #10 ·
this is a totally different car then the cruze but we did a baseline on a 350Z equipped only with the Blitz intake(which IMO makes an ants d*ck worth of difference anyway).
Baseline was 238.2 RWHP and 228.6 lb ft of torque. we added only the Hyper ground wires and saw 242 and 231 respectfully.
I know the difference is small and is even within an allowable margin for error but it seems to me for $25 the grounding kit is good for a few ponies!! we also noticed a better throttle responce and smoother idle!
after setting up a bet with my co-worker we disconnected the ground kit and found we were back to 238.6 and 229. reconnected it and got 242.1 and 230.9. and i made $50 hahaha
 
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Discussion starter · #13 ·
It's not a placebo exactly. Certain problems can arise with too much resistance in the frame. For example, in my camaro, running a ground to the engine, frame (front) and frame (back) helped the fuel pump because the stock wires were too thin gauge and the frame had too much resistance.

Similar problem in my SRT-4, you upgrade the fuel pump wiring to swap out the 16awg for a 10awg because it can't get enough juice on the top end to spin the pump and deliver the required fuel, especially for modded and tuned cars.

When it comes to serious alternator killing amps, you need the power and can't rely on it coming to through the frame. You could wind up eating $$ on a new amp.

Even so, $25 for this mod is nothing compared to potential benefits.

Great write up BTW. Much better job than I would have done for sure.

Thank you titan2782. I respect your comments.
 
Discussion starter · #16 ·
we ran the car 7 times 4 in the morning and 3 after lunch. temp out side was 39*in the am and 52 with lots of sun after lunch. But the dyno is inside the shop and is 65* all day inside.