I will try the adjustments for the starting, thanks for the guidance.
As for the alternator. Yes I can do wiring and heat shrinking. I also have used in many cases Solderstick for this (USA not knockoffs). I can run a wire if that's it.
This is my instrument cluster (borrowed pic but accurate), I believe that is annmeter. I have seen updated instructions to add tachometer and have been considering that also. If I goto a volt meter, there isn't one that works in the existing cluster, so I would have to do something like below and just leave the cluster one unhooked.
All told, if this isn't that hard, mostly my goal is to up the power and not burn my truck to the ground. So if 2g is doing precisely that (which is what I understood) and 3G can be done and not do that, looks like that is where I should go. I assume this means I don't care what it is currently and I would goto one of the 200amp (?) 3G and do some light wiring and a voltmeter on the column.
I already have a hydraulic hauling booster for the brakes that's running a break line through the firewall I need to remove as it's not operational anymore and it's just an additional bleed/failure point, so if I wait on that, I might be able to use that to get through the firewall where it does and go up into the instruments.
Yeah I can wait and if you like let me know I can try to follow what you come up with to make sure it's clear, I am technical (computers) but not a mechanic (physical) so might be a good test target and happy to do so.