Intermittent Charging issue - at whits end

[4gCO]

This can happen when the cables are corroded or have poor connections. battery cables tend to corrode out from the inside

The battery cables look relatively new. The only thing that looks a tad rough is the engine ground, but I think thats just grimy. The terminals are new as well, I forgot to mention that. I did measure the resistance and there was nothing worse than a few ohms.One thing that I can mention because I just remembered it, if I start the truck and then disconnect the negative lead from the battery, and then run a voltage test between the positive terminal of the alternator and ground, its up at 14.5v. When I re-attach the battery, it goes back down. Any thoughts?

[4gCO]

For what its worth as well since I know people will get on my butt about this, but this test was performed accidentally. I knocked the negative terminal off when I was working and i was very excited to see the voltage jump up until I realised what had happened. I believe nothing was damaged as a result as all issues are just as present as they where previously, nothing new, nothing went away.