I'm having an issue with my alternator, and I don't know exactly how to explain it..so there's a video of it. I am experiencing symptoms of ac noise leakage while driving. Any ideas? I'm not a voltage expert, but is this a "closed loop" situation? I'm getting massive ac noise differences based on what I'm grounding to..and I don't exactly know how to start working on this. It's worth noting that this is a new alternator from Nation's, a seemingly reputable alternator manufacturer..and all voltage is within spec, as long as I ground to the battery? I'm at a loss here.