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really bad feedback, ground noises?????factory hu security by pass


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guys i need some serious help. I have a 2001 Tahoe that I have tried to install one of my old systems in with new wiring. First off the pioneer HU will power on but get absolutely no sound from other than the subs, if I turn off the HU and cycle the ignition it will allow sound to come throught the unit. Any ideas? I installed my highs amp and ran RCA's from the head unit in the same direction the subs are ran when all was said and done I had some serious engine noise. I figured first things first new ground. I ran a completely new ground all the way from the battery to a distribution block and grounded both the sub amp and the highs amp. Still got noise. So i completely un-installed the highs amp and returned everything back to the harness, now when I turn on the radio on any source i am getting feedback with KOEO and KOER even with the volume turned all the way down. Any help is appreciated. :censored:

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