Any 1 good with headunits?

[urmomsmin3 10+ year member]

so i have this buzz /alternator whine i grounded the rca out puts on back of the headunit and to my surprise it got a tad better if that its so annoying is there any other fixes out there besides buying a new headunit

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[trumpet 5,000+ posts]

Without knowing more information, here's what you can do.

• Run a new ground wire for the head unit to bare metal that connects to the body of the vehicle.
  
• Clean the ground connections for the battery. There should be a ground wire going to the body and a ground wire going to the engine.
  
• Make sure your amplifier grounds go to clean, bare metal.
  

Get the idea? Alternator whine is often caused by a poor ground, possibly in multiple places.