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<blockquote data-quote="Z1NONLY" data-source="post: 7519152" data-attributes="member: 634086">The amp is most likely amplifying some noise it&#039;s getting from the the RCA&#039;s. That noise could be coming from the HU or getting picked up by the RCA&#039;s between the HU and amp. If you can, disconnect the RCA&#039;s from the HU and connect an ipod to those RCA cables through an adapter. (probably 5-10 bucks at Radio Shack)Also, try to leave the RCA&#039;s routed the same way for this test. We want to see if the noise is due to the RCA running close to a &quot;noise source&quot; or if the HU is putting noise into the RCA&#039;s. (and the RCA&#039;s are just doing their job by getting everything that&#039;s put in one end to the other end.)If you get noise with the ipod, try running the RCA&#039;s through a different route. If there is no noise, check the HU&#039;s power and ground connections. First try different grounding points. If that doesn&#039;t work, try running a power cable straight to the car battery just for the radio.</blockquote>

[QUOTE="Z1NONLY, post: 7519152, member: 634086"] The amp is most likely amplifying some noise it's getting from the the RCA's. That noise could be coming from the HU or getting picked up by the RCA's between the HU and amp. If you can, disconnect the RCA's from the HU and connect an ipod to those RCA cables through an adapter. (probably 5-10 bucks at Radio Shack) Also, try to leave the RCA's routed the same way for this test. We want to see if the noise is due to the RCA running close to a "noise source" or if the HU is putting noise into the RCA's. (and the RCA's are just doing their job by getting everything that's put in one end to the other end.) If you get noise with the ipod, try running the RCA's through a different route. If there is no noise, check the HU's power and ground connections. First try different grounding points. If that doesn't work, try running a power cable straight to the car battery just for the radio. [/QUOTE]

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