argh...I'm getting the dreaded alternator whining. I've sanded the grounding area to a bright shiny sparkle, so I'm sure there's proper contact with the car chassis. My amp is definitely grounded well as I get no whining/hissing when I'm in CD or Tuner mode. But as soon as I switch my head unit to Aux-In mode...I hear that ever so faint whine. My amp and my opus are grounded in seperate locations and grounding them at the same spot isn't logistically possible. Would a "grounding distribution block" help? Any other devices to isolate the whine and kill it?
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