So I am back in town and was able to put a ground wire from the VR bare metal case directly to ground, and then to the neg terminal on the battery and I still had high voltage.
Next, I purchased a NAPA VR. I installed it and made sure I had a good ground. With the new NAPA VR it is reading a steady 15.15v. The previous VR would vary with engine speed. Obviously it is regulating the voltage since it stays at 15.15v regardless of rpm (more or less) but isn't that a little on the high side??
