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<blockquote data-quote="n2audio" data-source="post: 8702843" data-attributes="member: 540940"><p>can you access the back of the head unit? I would plug them into the amp and unplug them from the HU. Short the center pin to the outer barrell.</p><p></p><p>That will tell you if it's being generated at the HU or coupled into the signal cables. I would be surprised if it's the cables. Assuming that's the case you might try relocating the HU ground wire -- especially if it's running through the factory harness.</p><p></p><p>There used to be an amazingly detailed noise troubleshooting guide. I'm pretty sure David Navone wrote it, but I can't find it anywhere.</p></blockquote><p></p>
[QUOTE="n2audio, post: 8702843, member: 540940"] can you access the back of the head unit? I would plug them into the amp and unplug them from the HU. Short the center pin to the outer barrell. That will tell you if it's being generated at the HU or coupled into the signal cables. I would be surprised if it's the cables. Assuming that's the case you might try relocating the HU ground wire -- especially if it's running through the factory harness. There used to be an amazingly detailed noise troubleshooting guide. I'm pretty sure David Navone wrote it, but I can't find it anywhere. [/QUOTE]
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