Changed the alternator. One of the easiest alternator changes you could have. I probably spent more time to go to NAPA a few miles from my house than changing it. Haha...
May not have been necessary, but since voltage at the battery was well below 14V while running, I thought might as well. The truck is sometimes a bit slow to crank and now that the battery is a couple of months old and alternator brand new, hopefully that will not be the case anymore. Sometimes it also just clicks, but always starts after a couple more turns of the key.
I did notice that the negative terminal was a bit loose even when tightened as much as I could. It wasn't flopping around, or anything, but just slightly loose so that you could move it by hand. Not sure if that is the cause of the clicks, but I did manage to make a bit tighter, so I guess we'll see.
Hate to hear the wife complaining about it...