Thanks for the advice. I will try an get at the amp today. Any hints as to how to get the tailgate panel off???

On a side note, I found a little cable hanging down on the passanger side that looks like it may come from the radio. It sorta looks like a skinny coax with a tiny plug on the end. I will try and get a pic.

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Litton
'90 420 SEL (sold)
'72 280 SEL 4.5
'98 ML320 (for sale)
'86 560SL
'05 Jeep Grand Cherokee Ltd (offroad in style)
'87 Chevy Blazer (AZ Pin Strips)