Alternator Not Charging

67 Dart - I was able to run a jumper from the green field wire to the battery and was able to see the ampmeter charge. When I checked the green wire between the alternator and the voltage regulator I was able to get a positive contact. I thought the problem was the regulator. I swapped it out for the old one which I thought still worked, but I could not get the alternator to send any power through the ampmeter. I am not sure how to test the voltage regulator, so I may just grab a new one.