Join Date: Jul 2009
Location: North Texas
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Been meaning to post this for two weeks...
I had the iPod charger from my '02 in my wife's '08 for a Holiday trip. I noticed that the iPod Touch could be played through the car AUX port while charging. Quiet as...well enough over the top political posts for one night.
Anyway, no extraneous noise. I listened more carefully to the charging noise in my '02 and it appears to be a combination of alternator whine and digital hash, possibly from other things on the 12v bus. I plan to scope it (now that I can locate my scope) and make a filter to see if it can be eliminated.
Sweeney--the noise you described may be from grounding the AUX cable to your iPod case. Did you ever try isolating the 3.5mm plug shell from touching the iPod body?
'08 Highlander Base with goodies
'02 Highlander V6
'01 Honda Civic
'93 Camry LE V6 (departed)