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Message: <blockquote data-quote="ejschultz" data-source="post: 7251106" data-attributes="member: 603800"><p>Get a ground loop isolator for each set of RCAs you're running to your amp(s). If you have a Pioneer HU, you may have blown the pico fuse in there and that will require you to ground the RCAs to the rear of the HU. There are plenty of threads about that on here so a search will suit you well if that's your issue. I had some alternator whine in my Jeep with my Alpine HU and I couldn't figure out where it was coming from. I tried different grounding points and whatnot, but the whine would not cease. I went to Best Buy and picked up a Fierce Audio ground loop isolator. I got that because that's where I work so it was super cheap for me. It worked perfectly. I didn't lose any audio quality either. It was a few dollars well invested.</p></blockquote><p></p>

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