OK so start off by stripping both clusters of everything even the pcb on the back. Then in order to get the tach and speedo to fit, you need to remove the top half of the brake, seat belt, 4x4, choke light standoffs like this. I used a Dremel with a cutoff wheel, worked great.
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The tach is self explanatory pretty much bolts up, you have to make one new hole in the plastic and bend the tabs a little but it's easy.
Take this yellow box off the speedo:
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If your truck has one you will be putting the one from your truck on later. If your truck doesn't have one, then toss it.
Now, the speedo sits in there nicely but there are no hole to bolt it in. I cam up with an easy foolproof way to remedy that. First use the Dremel to cut off the speedo mount from the Camaro cluster like so:
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Then stick it on the back of your truck cluster like this (notice I had to trim a little off at the top). And mark your holes.
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Drill out the holes with the proper sized drill bit and bolt in your new speedo!
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Now for the little gauges. This is where it gets fun! First off, remove the needles from your old truck gauges. Then cut the rivets off the backside of them so that the face plates come off and your left with this
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Toss these. Or, keep them I don't care...
Now this was the hardest part. After you get one done the rest are easy though. Cut out the truck face plates so that the Camaro gauges sit inside them. The trick is to get them so they sit centered and level and plum. Spend a lot of time looking over the first one and always remember the number one rule of cutting, measure twice, cut once and rule two you can always take more off!!! If you really look at the gauges you can see that even though the Camaro gauges aren't round, their imaginary perimeter is about the same size as the truck gauges. When done you will be left with a C shaped faceplate. Use the first one to trace out the next two and repat the process. Pics:
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The last tricky part is, making sure they are centered in the holes of the black plastic gauge cover and drilling hols and bolting them down. I used a #3 center drill and just pierced the tip through. Then I bolted them together with the screws that held the clear gauge lens to the Camaro cluster.
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Sure, it looks junky on the inside but it's solid as hell and when the trucks black gauge cover is on you cant see any of this.
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Maybe I'll do a continuation with the wiring tomorrow.
~Tyler