This is a Lineage Gounding wire kit install.


First off you need some tools to work with.

1. 10mm socket or wrench for the Body ground points. There are 4 of them.
2. 12mm socket or wrench for the Negitive Batt post and the front AC Compressor bolt
3. A Lineage ground wire kit.
4. And A Rx-8:)

Step one.

locate the Ground bolt somewhat underneath the Air Pump on the passenger side of the Engine Bay.
Use the 10mm socket and undo the bolt. take Wire ,marked in the picture,#1
#1 is the shortest Wire in this kit.
Use a supplied washer and fasten the ground wire to the ground point.

Step Two.

1.Find the passenger side ground point and use the 10mm socket and remove the bolt.
2 Take the end of wire #1 and an end of Wire #2, a washer, finally the bolt.

DO NOT place the washer between the two wire ends. It goes under the bolt head.

Step Three.

Take the ends of wire 2 and 3 and Find the ground point located infront of the Strut Brace. This will be another 10mm bolt. Just like before, Wire end , wire end and then washer and finally the Bolt.

DO NOT connect the ends of Wire 3 and 4 the the negitive Batt post.
Save This For LAST.

Step 4.


1. Connect the ends of Wires 4 and 5 to the front mounting bolt of the AC Compressor.
This is a 12mm bolt.
2. remove the Airbox. lossen the hose clamp and unplug the MAF connection.
Pull up and toward the front of the car to remove the Airbox.

This makes the process easier of getting to the bolt.

Final step.

1. Connect the loose end Of wire 5 to the ground point next to the master brake housing.
2. Use the Wire end, wire en then washer then bolt just like before.
3. Tighten it down with the 10mm socket.
4. NOW connect the ends Of wires 3 and 4 to the Batt.
5. re-install the Airbox.
6. Connect the MAF sensor.

Clean up any tools left in the engine bay and start up your 8.

There was a little confusion :eek: on the sequence of the Connection on the Neg Batt Post. Check out the added close up pic of the post.
Sorry for the confusion !

Thanks Goto Huff Of Vividracing for the use of His Shop.


When I purchased this kit I didn't expect a mesureable HP addition. I didn't buy it for that. However it DOES smooth out the throtle response and a little better gas mileage.

Very nice DIY, 09Factor. Great contribution! :D

Nice job, Dave. Looks like you got everything covered. That was one hot mother of a day that's for sure.

What exactly does the ground do???

I looked up lineage grounding wires, and found prices from $79 - $200 for a set of wires.



How would that compare to something like this:



http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7913170055&category=33692

The main differences that I can see are the obvious ones:

-the Ebay kit most likely isn't a real MS kit but rather a knock off kit.
-The Ebay kit uses basic copper wire(nothing special printed about materials used or size) while the Lineag kit uses oxygen free 4 gauge 1862 strand copper cable.
-The Ebay kit routs all grounds back to Neg battery termainal while the Lineage kit makes up more of a chain of grounds that makes a circut of conections w/o routing everything back to the neg terminal. If there were a major spike in voltage it gets dispursed through the "chain" of grounds, not all back through the battery.
-The company Lineage was founded by a few of Rockford Fozgate engineers who happen to be car buffs and decicded that they needed a better grounding system for thier larger stereos, amps, etc. So that holds some clout in itself.
-Lastely, as far as we know it is the only grounding kit with proven dyno resluts right in the directions. An average of 3-5 H/P.

09factor, I installed my Lineage wires tonight, but I simply could not get a washer above the wires installed on the negative battery terminal. There was simply not enough bolt sticking up for the nut to grab hold. Will operating the system with this one washer missing hurt anything? :confused: All the other points have washers on them.

PS: Man was that AC Compressor bolt was a bit#&. I had the airbox out, but bending over to get at it nailed my back, and then there was not enough room for my wrench, but I managed with a few choice words uttered. :mad:

Missing that one washer on top of the Neg Batt. post won't make a diffrence.
I'll look at mine on Sat and post an additional pic for you for reference.

As for the AC bolt.....LOL I had problems the first time getting that bolt out too.
I removed it for the ground straps that the Nology wire uses.
I forgot that it was a PITA. :eek:

Let us know what improvements you see in the idle, mileage,ect.


09factor, I installed my Lineage wires tonight, but I simply could not get a washer above the wires installed on the negative battery terminal. There was simply not enough bolt sticking up for the nut to grab hold. Will operating the system with this one washer missing hurt anything? :confused: All the other points have washers on them.

PS: Man was that AC Compressor bolt was a bit#&. I had the airbox out, but bending over to get at it nailed my back, and then there was not enough room for my wrench, but I managed with a few choice words uttered. :mad:

Thanks, I figured it would be OK. I'm out of town for a week, so I won't be able to check on improvments until I get back. I followed your DIY and it really made this easy thanks. ;)

There is a photo of part of the install here:
http://www.rx8club.com/vbgarage.php?do=view&id=10660

So, how long for the install?

I was looking throught the Garage and saw the pic of the grounding wire.
I was wondering whose it was. It matches very well with the Ti color of the car.


Thanks, I figured it would be OK. I'm out of town for a week, so I won't be able to check on improvments until I get back. I followed your DIY and it really made this easy thanks. ;)

There is a photo of part of the install here:
http://www.rx8club.com/vbgarage.php?do=view&id=10660

About 30-45 mins.

So, how long for the install?

Two questions:

1. Do you have any additional info on gains (mpg, etc)?

2. Looking under the hood in the locations you mounted the grounds, there are ground cables already in these locations. Do the lineage grounding cables go on top of these?

I've never replaced the grounding wires before, and I don't want to screw anything up.

THe additional gains are mainly seen in smoother acceleration and power delivery, more stable idle, and a few h/p. The Lineage kit follows the stock grounding points/locations and are intsalled right on top of them. It's a very easy install and you don't need a rocket science degree to do it. I could give a kit to a primate and he'd eventually figure it out. You'll be fine and won't mess anything up. If you have any questions just ask myself or 09Factor.

THe additional gains are mainly seen in smoother acceleration and power delivery, more stable idle, and a few h/p. The Lineage kit follows the stock grounding points/locations and are intsalled right on top of them. It's a very easy install and you don't need a rocket science degree to do it. I could give a kit to a primate and he'd eventually figure it out. You'll be fine and won't mess anything up. If you have any questions just ask myself or 09Factor.

Not to sound stupid, but when u say "right on top" you mean you keep the factory ground wires and put these over them, or remove the factory ground wires, and replace them with these wires?

Just leave the factory ground wires in place.

does this kit follow all the same grounding points as the MS kit? I can't tell completely from the pics.

you can have the contacts be the exact same. There are 5 different length wires for best fitment.

What is the benefit of leaving the stock ground wires in place AND adding these? Inmy experience with past cars, kits like these were intended to REPLACE the factory ground wires in favor of a more heavy duty ground wire.

I just dont understand how having 2 wires at each connection is going to make a bit of difference. Again, not trying to sound stupid, Ive just never heard of adding more ground wires overtop the factory ones

You can leave them or remove them. They honestly do not hurt or affect the vehicle as they are just small ground wires. The Lineage kit is adding larger better conducting ground wires throughout the engine.

is it the same 4 all ground wires the way u use it 4 the lineage wires i have nrginnovations wires

The ground points would be the same providing the wire lengths are close.
I know the Linage kit is very close in wire lengths to the Hyperground kit.
i'm not sure about the wire in the NRGInnovations kit.
How many cables does you kit have?

So do you feel this is a mod everyone should be doing or primarily those that have additional electronics, amps, or accessories installed? Are there significant benefits to a stock car with the factory equipment?

Nice DYI, it gave me the idea to look into grounding wires as well. The car is new so the original ones might work fine for now, but seeing their quality, I can forsee future problems due to corrosion (rough idle, etc.). I looked onto the site and found the maxground.com wires to be of identical quality but less expesive. They follow a different route and avoid the alternator ground point, so it took 10 min for the install. Came with their own instructions (color!). Also, I could avoid having the long wire crossing the engine bay hooked onto the strut stabilizer bar. I routed it on the firewall as there are two unused tube holders that I used for the wire (they are white, cannot miss them, one is on top of the oil filter :))

I have seen on eBay that in addition to the ground wires, you can also get a positive charging system or "voltage stabilizer". Does anyone know if this is worth the money or not?

I have seen on eBay that in addition to the ground wires, you can also get a positive charging system or "voltage stabilizer". Does anyone know if this is worth the money or not?

I've just purchased the grounding kit and voltage stabilizer, m gonna install them (hopefully over this coming weekend), will try to reply some feedback here. Frankly this stuff provides very little improvements, so, its one of those mode where its good to be there but really how well it performance remain a ?

Lets us know what if any improvments the voltage stailizer gives. From what I've read it sounds like a cap kit.

Lets us know what if any improvments the voltage stailizer gives. From what I've read it sounds like a cap kit.


Installed the Voltage Stabilizer and the grounding kit on Saturday. Only have been driving for the last 4 days. The only impressions are:-
The car drives smoother, it feels good, slightly quiter. I'm from tropical island, so it gets pretty hot during the day. And the car can feels pretty sluggish during the hot mid day. On the contrary, the car feels great when the weather gets cooler, and this is wat i'm experiencing now after the kit being installed. Can't wait to try it when the weather gets a little cooler, as it has beeing hot for the last few days.

Anyway, beside the smoother drive, its probably a little more responsive as well.
As for increase of HP and torque, I dont think so. Even if there are any improvements, its to little to tell/feel.

The VoltageStabilizer that I've gotten is a little different from most of what's in the market. Most have only the Positive and Negative post, my has an additional negative cable to a grounding point. Thus 3 cables coming out of the box. And my ground point are mainly route to a central point, which i choose the point near the tower brace.

09factor where did u get your kit? and how much?

09factor where did u get your kit? and how much?

deleted.

09factor where did u get your kit? and how much?Bought it from VividRacing and $60.


The VoltageStabilizer that I've gotten is a little different from most of what's in the market. Most have only the Positive and Negative post, my has an additional negative cable to a grounding point. Thus 3 cables coming out of the box. And my ground point are mainly route to a central point, which i choose the point near the tower brace.
Could you post up pics of your install? :o

Could you post up pics of your install? :o

sure here you go.



ps. my ride is a RHD, so its a little diff in the bay.

great DIY, i had some regular 2 guage audio wire lying around so i decided to make my own grounds. I used this guide to find grounding points. I will probably be adding more gorunds later on for now this many is sufficient.

Nice DIY....put mine in last night and can definately notice the difference
Thanks!!

Glad it helped you out. I did change one point of connection It the rear bolt that holds the plate the ign. coils to the short block.
Just to help their ground...

A Zombie thread rises from the dead! Brains! Sweet, delicious BRAINS!

^^ you're stalking me aren't you......

I am mesmerized by your sig. I can't wait to see what part of the English language will be strangled next...

Just rerouted some of my wires last weekend too, including a new one to the the coil plate... gotta real nice whine in my audio system now....especially when the USB XM PCR sat radio is plugged into the 4 port hub (CarPC).... I even took it apart and soldered on a custom ground from the XM PCR antenna connector, but no change...
Might be time for new spark plug wires, and a better 1/8" mini cable from the PC to the sat box....

Any of you guys run a line to the ECU shell like me? I also have one on the alternator, intake manifold, and a couple of fender mounted ones where other ground bundles meet....

I think this is called a "thredsurrection".

No $%!* Really. Ha Ha.

Chamberlin, What type of Ground does the CarPC have?

Yea, somethings just need to be re-surrected, some not (i.e. V-6 swaps).

Anyways, I bought one of those super cheepo kits last year, and threw away the mounting block head (IT WAS F'ING GOLD ANODIZED ALUMINIUM!!! = NOT VERY F'ING CONDUCTIVE! = sparking all over the place!) but all the wires were kept and are run to the two available posts on the yellow top and to various key grounding spots in the bay. The Car PC's power supply has an 8 gauge coming from the passenger side fender eyelet ground, which is alternately connected straight from the battery via one of the aforementioned ground lines.

This excessive whine seems to have come after I re-grounded the coils (which kinda makes sense) but I am not entirely sure (I suppse I should pull the ground while whine is present huh!). I also ran another ground to my 'main' ground block near the CarPc, and touched various parts of the radio chassis etc... but there was absolutely no change. My next step is to try a much better quality shielded 1/8"mini line to feed the PC from the XM box, and I also have some RCA style ground isolation adapters I can try.

I just installed the Z Enterprises grounding kit. The wires came in the mail in two days, and at this time of year that is pretty impressive. Price for this kit was about $45 dollars including shipping.

The kit came with the wires, instructions w/pics, and zip ties. Install was very simple especially with the good, easy to understand instructions.

Honestly, I can't tell any difference in throttle response or performance. But, this is a "feel good" mod, the kit is nicely made and easily installed in about 30 mins or so.

this thread will come in handy. good writeup

Silverx8 had some serious gauge wire in his garage that we used to make a custom grounding kit last night for my 8. we took out the battery, the battery box, the air filter / cmpletely / and we hit all the factory grounding points including under the battery box we ran all the wires to their individual grounding points, routing them beneath the rest of the engine wires so there were not STOOPID in the way, and we connected it to the neg terminal of the battery.

The benefit to using your own wire... besides being cheaper, they are black, so they look like they belong. I really cant stand to look at the kits that have contrasting wires like purple... all over an otherwise clean and neat engine bay.

after one day of driving with this kit I will say that there is no obvios HP gains, but the engine idle is smoother and it feels as though the throttle response is a little smoother and even.

Is this highly recommended for those of us that are running high power audio systems?

I know there is a lot of talk about the RX-8 being lousy when it comes to grounding. Will this help elliminate engine & alternator noise and audio whine in aftermarket stereos?

Is this highly recommended for those of us that are running high power audio systems?

I know there is a lot of talk about the RX-8 being lousy when it comes to grounding. Will this help elliminate engine & alternator noise and audio whine in aftermarket stereos?

The 8's ground are better than some, but not much.. As for this removing the whine/noise, maybe.
Chamberlin will probably have a better answer.