This is the Mazda Japan genuine grounding kit, which I believe comes on the Mazdaspeed 8. Canzoomer used to sell these for $195 back in the day.

A couple of the connectors have some tearing in the rubber insulation (see pic), but other than that it's in good condition.

SOLD

 

Bump.

 

Monthly bump, price reduction.

 

there was never a mazdaspeed 8.

more pics? pics of the actual kit that say mazda japan on it?

 

Maybe you're confused with the M'z Tune RX-8?
http://www.nihoncar.com/en/review-47...+Tune+RX8.html

 

A few questions if you don't mind:

I see two cables with six connection points.
- Where do these cables tie in?
- Do these replace any factory cables or just augment them?
- What gauge is the wire?
- What are the primary benefits?

 

I believe there was a model sold as Mazdaspeed in Japan which was basically all the MS parts pre-installed on the car. I could be wrong about the history, the kit was purchased from canzoomer years ago.

I have some instructions in Japanese at home which I'll see if I can post. I forget the exact mounting locations. The kit augments the existing ground wiring and the purpose is to clean up the electrical signals between components. One possible benefit being smoother idle.

Anyways, I have a sale pending so I probably didn't have post this.