Modding My Cluster

[BLE 'BURBAN]

Ok I said many times I was going to do this and have decided the best way to share it with you is while I do it instead of waiting until it was all done and try to remember all the steps I went thru to reach the final result. But first, a little background as to why I'm doing this.......

I have a small onboard air compressor w/tank installed in my suburban for my train horns & for an on demand air supply for whatever may be needed in the future. I've wanted to put in an air pressure gauge for a long time but didn't want it to look like an after thought P.O.S. install. A buddy of mine was working for a snow removal company at the airport last winter when he came upon an old C70 truck with a factory air pressure gauge and a combination Tach/fuel gauge. I thought it would be pretty cool but one problem - I've got an electronic speedo in my '90 Burb and that cluster just wouldn't work for me. besides what are my chances of EVER finding one of these clusters in a wrecking yard up here in Alaska? So I filed it away in my mental file of things I'll never get to put in my Burb. Then I started thinking. And contemplating. And planning. I would just install a factory tach and a small fuel gauge set up that I got from TOOMUCHSTUFF on here. Well on the very day that instrument cluster shows up on my doorstep I stumble upon 2 other clusters on EBAY that are out of the heavy commercial trucks. the first with a vacuum gauge and the other with the air pressure gauge.
Now being in a hurry to get a bid in and not really reading COMPLETLY THE DESCRIPTION of the first cluster, I negleted to realize that it had a vacuum gauge and not what I thought was a pressure gauge
So I win the bid for both of these clusters and get one already while still waiting on the other cluster to show I decide it's in my best interest to pick up a second electronic speedo cluster to do all my modifications to so my Burb won't be without a dash and undrivable as it's my only running vehicle right now.
Here's what my cluster currently looks like.......