Thanks for the comments guys...
My vote has been to pull it all out too... as my buddy said when he saw the wiring under the dash, he didn't know if he should work on it or go look for some spaghetti sauce to put on it...

It is a tangled mess and there's not too much hooked up there to start with!
I think taking note of the flow of the wires would be great but there really is no method to the madness anyway... I'll make note of which wires exit the cab where and try to go with that I think!...
One other thing I was considering doing since almost everything under the dash has inline fuses built into the wires... For the sake of cleaning THAT up I was going to visit an auto wrecker and pick up a nice fuse box, preferably one with the turn relay built right in... that way I can run ALL wiring to just one area in the cab, get rid of all the inline fuses and just run wires to what I need from there...
In my humble opinion it should make things cleaner and simpler for me than the way it is now...
Can't wait to install the Ididit steering column and get rid of the old crappy GM one either... brushed aluminum is going to look nice in there and brand new wiring to attach to is going to be a treat!
~Trev