Z28 Cluster Mod Instructions - Chevy Impala SS Forum
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post #1 of 32 (permalink) Old 04-12-2016, 01:02 PM Thread Starter
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Z28 Cluster Mod Instructions

Many years ago there was a website (www.9c1.com) that no longer exists that had a great set of instructions of what needs to be modified and how on a Z28 Cluster to work in the B--Body. Think there are also instructions on how to make your own harness. At the time, I thought it would be a good idea to print out ALL of the instructions and Images which show exactly where to modify wire traces even though I bought a ready made Cluster/harness. Glad I did as I have had ZERO luck finding these instructions replicated anywhere on the Net. There were also instructions on how to disassemble the Odometer so you could match your current cluster mileage.

I have been looking for these printouts for a while and thought they were lost along with the website that used to host them. Was starting to 2nd guess myself and my memory and if I even had them to begin with. Welp, I'm happy to say that I just found them over the weekend in all of their Color Glory. Yes, I even printed them out in color.

So, for those of you that are interested, I'm going to see about getting it all organized and somehow back into digital format so that I can repost here. Thought there may be some interest in these instructions and just not sure if there are any concerns with these formally being on another site. I will reach out to Admin and make sure this is OK to repost these instructions and if so, give me some time to convert these over into something I can post up and look for more info in this thread.

More to come....I hope. Let me know if there is interest and I'll see what I can do.
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'95 Caprice SS conversion - Bonny Buckets - 96 Column, Shifter and Console - 3.73 Gear and Herter tune - Z/28 Cluster - Blazer OH Console - Green/Pink bushings - Chromed Impala Wheels - Eibach Springs and Bilstein Shocks - Corvette Engine Dress - the list goes on and still more to do...it never ends.
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post #2 of 32 (permalink) Old 04-12-2016, 01:19 PM
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I'm interested.

Thanks for the effort to put this together.
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post #3 of 32 (permalink) Old 04-16-2016, 12:17 AM
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awesome. ive been trying to gather the information also and only websites i found that were helpful were Z28 Cluster Install in Impala SS - Gerry Massies and http://www.1finecaprice.com/z28clusterinstal.htm for the odo change. found one pic online of where to cut the traces on the board on the left side(looking at board) but no other info or pics on where the jumper wires solder to on the right side. cant wait to finally finish it up!
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post #4 of 32 (permalink) Old 04-16-2016, 01:35 PM Thread Starter
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Yes, I think your first link to Gerrys page is where I first found all the instructions years ago. The date on the printout is 10/31/2005 so it's been almost 11 years since I printed them out. A lot of links there like to the www.9c1 site and the site itself are dead.

Looking thru what I found I do have the better article for resetting the odometer along with a few others to modify the circuit board. Thought I had one too on building the harness but may have to dig more for that.

Once I get it all gathered up I'll figure out how to post all this stuff. I have a cluster and harness I bought already modified and figured this could be reverse engineered if I ever have to, but having written instructions and pics is so much better.

================================================== =============


'95 Caprice SS conversion - Bonny Buckets - 96 Column, Shifter and Console - 3.73 Gear and Herter tune - Z/28 Cluster - Blazer OH Console - Green/Pink bushings - Chromed Impala Wheels - Eibach Springs and Bilstein Shocks - Corvette Engine Dress - the list goes on and still more to do...it never ends.
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post #5 of 32 (permalink) Old 04-16-2016, 04:40 PM
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Wouldn't it be nice to have a time machine?

Have a look at the waybackmachine.

https://archive.org/

In this case specifically:

https://web.archive.org/web/20071025...cal/index.html

It does not have the harness build information but there are pictures of both sides of the circuit board. (one pic missing)

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post #6 of 32 (permalink) Old 04-17-2016, 12:07 PM Thread Starter
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I like going back in time. . A lot of those links look like stuff I've seen in the Impala ss technical archives document. A lot of other links that I completely forgot about. A couple of links to your archive didn't pop up but there are many more there that do and lots of good info in that way back machine.

The 3rd post here has a link to Gerrys thread which is still active and has similar info along with harness pin outs. I have good pictures of the circuit board mods and highlights what each bulb is for. Hopefully with all this info we can gather and post here, will give others the tools they need to do this mod themselves if they gather up the parts. There used to be a member or 2 here that sold these ready to install kits but this may not be an option some want to do or have read of bad stories on these sellers that may or may not be true. In any case, having the info to do this yourself gives us all another option.

================================================== =============


'95 Caprice SS conversion - Bonny Buckets - 96 Column, Shifter and Console - 3.73 Gear and Herter tune - Z/28 Cluster - Blazer OH Console - Green/Pink bushings - Chromed Impala Wheels - Eibach Springs and Bilstein Shocks - Corvette Engine Dress - the list goes on and still more to do...it never ends.
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post #7 of 32 (permalink) Old 05-09-2016, 11:43 AM
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I found this quote by: 94 impalass

Quote:
Did the Z cluster and figured I would share some things I figured out and didn't find with a search. First is you don't have to cut the wires on the left stock impala connector and solder them to the z cluster. You can just remove the pins and put them in the correct slots in the z cluster. They both use the same pin type. Basically you have to use a very small jewlers screw driver or the equivalent (I used a staple gun 3/8" staple un bent). Take the connector and look at pin holes. There are four rows of holes. The two center rows are where the cluster pins insert. The outer two rows are what hold the pins in the connector in place. You will see that these outer square holes have a piece of metal against one side. Put the screwdriver in the hole and press toward the metal side until you hear a click. This is the female pin coming free. give the wire a tug and it should come right out. Do the same to the Z28 harness to remove its pin and then slide the impala connector pin into the appropriate slot in the z28 harness. It should click into place. Ta da. Save a heck of a lot of soldering and is a lot cleaner.


94 impalass
I have not seen this method before.

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post #8 of 32 (permalink) Old 05-14-2016, 12:48 PM
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I think the instructions you're talking about are found in here, more specifically starting on page 52. http://www.impalasuperstore.com/naisso/ss_handbook.pdf

1996 DGGM Impala SS
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post #9 of 32 (permalink) Old 05-14-2016, 08:32 PM
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Quote:
Originally Posted by 4x4high View Post
I think the instructions you're talking about are found in here, more specifically starting on page 52. http://www.impalasuperstore.com/naisso/ss_handbook.pdf
That just how to install it but not how to make the harness like the 9C1 website had.


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post #10 of 32 (permalink) Old 05-15-2016, 12:48 PM Thread Starter
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Quote:
Originally Posted by CHILNLO View Post
That just how to install it but not how to make the harness like the 9C1 website had.
Yes, that was the intent along with how to modify the cluster.

I apologize for not getting to this sooner. Just have not had time to get these docs uploaded, but it's still on my long list of to-do's.

================================================== =============


'95 Caprice SS conversion - Bonny Buckets - 96 Column, Shifter and Console - 3.73 Gear and Herter tune - Z/28 Cluster - Blazer OH Console - Green/Pink bushings - Chromed Impala Wheels - Eibach Springs and Bilstein Shocks - Corvette Engine Dress - the list goes on and still more to do...it never ends.
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