After you have it wired up, following the previous post(s), here's something else you might want to look at as well. On my car, one of the fields (I have a dual field alternator, square back style) phillips screws that holds the field in place in the alternator, there was an extremely small crack/cut into the porcelin female fitting the screw screws into. That small crack caused the same issue with me of my voltmeter jumping up when giving it gas. I thought it was a bad voltage reg. Nope. After pulling the alternator for the $%$#$ time, I took a much closer look at the fields. Sure enough, there was a small crack. I replaced the alternator and never had any other issues - my voltage meter kept increasing past 14, then past 16, even up to 19 as I was giving it gas. Not sure if that will help, but you might want to take a look there as well. Good luck!