I took the new alternator to the NAPA Store and we tested it. The test was great, it worked like it was supposed to. I ordered a new pigtail that will plug into the alternator. I brought the alternator home and reinstalled it. I started up the 78 Elk again and it ran great. The volt meter dropped down to about 9 volts and after a minute, it went up to 13 volts. I think the problem is still here and hope to put the new pigtail on on Friday. Then see where it goes from there.