This is on a 70 and up system. I pulled the green wire off the alt and the wire is not grounded between the alt and the regulator. I didn't start the car to see if it was still showing 19 volts but I also pulled the blue wire off the alt and checked continuity between the terminals and the alt case and I got continuity between the case and both terminals. This sounds like we have it narrowed down to the alt? As soon as I get home from work tomorrow the alt will be coming off to look for the grounding issue. Thanks for your help and hanging with me through this.