Hey i just bought a 8 wire HKS circle grounding system. Im trying to install this thing myself, does anybody know of a DIY i can refer to, because i have no idea how to install this thing. Thank you. =)

 

Didn't HKS provide an install guide?

2003 TwBlue 5AT Sedan, sunroof,
Graphite Leather, splashguards, HKS exhaust,
14 wire Grounding kit, 350Z duct, Stillen CAI
Underbody rear diffusers, Drilled alum pedals

 

Just hook them up wherever you want. They didn't do a darn thing for me but look cool. Idle speed unchanged. Shift points, unchanged. 1/4 mile times, unchanged, shift quality, unchanged.

However, I did an ECU reset yesterday and noticed many of the differences some posters claim after installing the ground kit.

Or, you can look up about 1.5 inches from your post and see a literal novel written on the subject including very graphic and detailed instructions.
2004.5 Coupe/5AT/Ivory/Everything but front spoiler/Nismo CAI/Crawford V5

 

Here is my 6-wire setup (don't have the AT tranny, so no need for the 7th wire).

It's not a DIY, but hope it helps as a reference...

Grounding kit pics

04 6MTC DG/G/Prm/NAV/C.Crnrs/C.Br/A.ped/Polk/PIAA/Grnd.Kit/Rebadged/JWT Pop Charger/Z-Tube/Spl.Grds