Thank you for the reply, I was referring to the how-to's from this section:
https://forum.hptuners.com/showthrea...o-and-how-to-s
The MAF tuning threads are outdated with no files in them, leaves you hanging. Had no idea the other how-to's existed in the scanner section. I need to get out more often.. I'm also more of a visual guy unfortunately. A lot of the forum posts are a bit over my head as I'm stuck still trying to get my hands dirty in the software. Full family life leaves little time to study up on this with no in depth manual to bookmark and come back to. I used to know the ins and outs of the 94-95 LT1 ECMs, but I'm still getting a grasp on the P59. Think it's starting to click though, reading enough to understand what it's doing and what it's looking for. Thanks again.
I've luckily got a pull-a-part yard near me. I pulled the cluster and as much of the harness as I could. I wired it in when I was lengthening/shortening the wire bundles in the dash. Wired in the cluster lights, high beam indicator, turn signals, etc. The serial data takes up the bulk of the gauges, but as I said, volt meter is dead due to needing signal from the BCM. The fuel gauge is taking some tuning to get right, still unsure if the gauge is right or I have a bad stepper motor in the cluster. That again is one of those smarter than the page I'm looking at deals.
Here's a pic of when I first wired them in. After this I did a lot of clean up, zip tying, bundling, and split loom. I'd marked the extents of the needle sweeps so if I accidentally bumped them I could reset their position.