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Hi Troy, I looked up your vehicle in our database, and did not see a direct auxiliary input jack available for your factory radio. The high pitch noise you are describing sounds like it might be from alternator whine. We do sell a filter for to help with that. I recommend that you try that filter with...
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I have installed a Sirius radio in a 2003 Ford Expedition. When using the basic set up where it is received on the radio it is effected by some interference. I am also running it through a DVD Aux in jack that is on the ceiling TV behind the front seats using a long RCA extension routed through thec...