grounding RCA's isn't uncommon...lots of people have to do it if they are running lots of channels...I have all 4 door speaker RCA's and my subs RCA's grounded...otherwise you can get that noise and sometimes grounding them will actually imporve signal quality whether you think yours is good or not....just do it somewhere unoticeable...i shaved part of my cable behinde my rear seat and grounded them to the trunk floor...made a big difference in the door speakers but no difference in the Subs...the Subs are less likely to need a ground because they are MONO and it's harder for the average Jack to tell if he is getting a bad sound out of his subs...but it's not uncommon at all....a lot of nicer stereo shops will do it on all amp installs just because it's one less problem they will have to deal with later....


Black 99 SE 2.5L MTX
17Inch TSW REVO (Silver)
225/40/17 Toyo (Z-Rated)
Energy Suspension Mounts
20% Tint (Sides and Rear)
Koni Adjustable Struts
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