I had a disconnected RCA cables from the head unit. I tested the system without the head unit connected but with the RCA cable still plugged in, but I didn't get any noise at that point. That's why I thought that I had eliminated the amp as the source of noise. I also thought at that time that I had eliminated the RCA cables and where they were run as well.
Tony
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Lapis Blue 03 Boxster S
Seal Grey 04 Boxster S (RIP 9-21-14)
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