Pioneer ground issues

I can't seem to find that thread that was floating around a while ago on how to cure the ground noice on pioneer's HU..I plan on buying a deh790 real soon on my new car so i rather know ahead of time on how to fix it..thanks
to keep it from happening, just be sure to pull a new ground wire instead of the existing one.

also ground the hu's black and the case...this should prevent any future issues

 
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ugs92

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