Just got home from work. I got a response from Jeff Jones, at 8:15 this morning. He said based on the information I gave him it definitely sounds like a voltage regulator. I haven't gotten into it to deep yet, but I was thinking since I already have to order the VR should I order and replace the brushes. they are $120. It has 1200 hours, and has been there since 97' I'm guessing.
97' Overland Ospery 4012, 42' long, 41,000 miles, 8.3 cummins, 6 speed allison, freightliner chassis, pulling a 24' enclosed trailer.