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<blockquote data-quote="AndrewH05" data-source="post: 8061867" data-attributes="member: 652892">At least I don&#039;t believe it is amp, here&#039;s what I did today.. I removed the dash and pulled out the head unit.. I disconnected the RCAs from the HU, no whine. I reconnected one set, no whine, disconnected first set,&nbsp; connected second set, no whine. Then I ran a new ground, in multiple spots, one even being straight to the battery, with both RCAs connected still got frickin alternator whine!Is it possible that with both RCAs connected the amp is trying to ground itself through the RCAs? There&#039;s only two options, maybe 3 left.1. Bad HU2. Bad RCAs (highly improbable as neither has any noise when connected alone)3. The amp is sending it back through the RCAs this is how my power set up is..2 amps connected via power and ground to Rockford Fosgate CPCC25 capacitor, and the main power goes into the capacitor and the main ground goes out of the capacitor. My ground from the capacitor is 4 gauge and is unfortunately longer than 18&quot; is more like 30&quot;..I need to know what I should try.. My return Window for the amp and head unit close in 4 days...</blockquote>

[QUOTE="AndrewH05, post: 8061867, member: 652892"] At least I don't believe it is amp, here's what I did today.. I removed the dash and pulled out the head unit.. I disconnected the RCAs from the HU, no whine. I reconnected one set, no whine, disconnected first set, connected second set, no whine. Then I ran a new ground, in multiple spots, one even being straight to the battery, with both RCAs connected still got frickin alternator whine! Is it possible that with both RCAs connected the amp is trying to ground itself through the RCAs? There's only two options, maybe 3 left. 1. Bad HU 2. Bad RCAs (highly improbable as neither has any noise when connected alone) 3. The amp is sending it back through the RCAs this is how my power set up is.. 2 amps connected via power and ground to Rockford Fosgate CPCC25 capacitor, and the main power goes into the capacitor and the main ground goes out of the capacitor. My ground from the capacitor is 4 gauge and is unfortunately longer than 18" is more like 30".. I need to know what I should try.. My return Window for the amp and head unit close in 4 days... [/QUOTE]

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