Most Elaborate Grounding kit you'll see
 

I just finished grounding my 2006 350Z and I'm pretty sure it's the most elaborate ground set up you'll ever see. I got the idea from a Volvo V70 and decided to apply the set up to my car.

Grounding to steel is good, but a direct ground passing through copper is way better. I do this for a living so I have the means to put something like this together for next to nothing. I'll post a video below, hopefully you guys like it.

I know what you're trying to create is an "absolute" ground, but you'll never actually succeed with so may different grounding points. In fact, you might be creating multiple ground loops, because each ground point will have a slightly different potential, even if just in mV's. I don't see any benefit to this, and you may have some issues with your audio system when you get it all in place.

I agree in some cases you may create ground loops. But the difference is each grounding point is interconnected and at the end of the trail attach to the negative on the battery. I've never seen someone grab ground right from the battery and bring it to the interior and then connect again to that point. Only way to tell, is to measure the impedance of each point and install the sound system and see what happens. Can't improve things unless we try, test and compare.

what i did was:

250 amp alternator
Stinger SPP1200 Battery in factory location
2 Stinger 0 awg power runs from + terminal on spp1200 to the very back where the spare tire & jack were ( they are now gone )
2 stinger 0 awg ground runs from the - terminal on spp1200 to the very back where the spare tire & jack were ( they are now gone )
3 more 0 awg ground short runs from - terminal on spp1200 to ground points under the hood

Alpine IDA 305S
Digital Design 9515G ported at 30 hertz in 3.25 net cubes
Sundown 100.4 on front stage
Crunch GP3000.D pro running 1/2 ohm
Digital Design W6.5 mid bass drivers in the doors
Digital Design AW5.25 mid range in kick panels
CDT DRT silk dome tweeters in the kick panels
No rear fill
CDT EX550I crossovers
125 plus square feet of Stinger Road Kill
Stinger 8000 Interconnects x 2 ( 2 ch ) & ( 4 ch )

Holds at 14 + volts on full tilt

Yeah but did you ground your exhaust? Lol thats a lot of wire in their.

There's already a factory one on the rear that attaches where the muffler joins the resonator pipe. I was thinking about just putting a new braided style line that's thicker than factory, since the type seems to hold up well under the car.

I work in a shop so we have lots of scrap wire, and I wanted to try something new and totally overkill.

I was just pulling your chain, the exhaust ground always breaks off and or gets lost when the aftermarket goes on. I was thinking about yanking out my amp and using the nice kicker 8 guage (yes my amp is sissy) wiring kit I have to make a grounding kit. Nothing like that one though.

those magical bolt holes in the front that you have no idea what they are...are for you hood closed sensor. You should have a plug sitting somewhere.

Looks sick brutha. Good work.

Probably gained 1/14th of a horse power with all that work! :p