Question about Car Audio Receivers
First of all sorry for the issue that you have. I believe you have some solutions to try. There is 2 possible cause, internal AUX preamplifier is faulty or external AUX connection acquires electromagnetic signals. USB connection wont be fact. But AUX connection (The stereo female input jack) or Kenwood disc Changer Connection might have unshielded spot on its cabling. Disconnect all the AUX cable and Kenwood disc changer connection (if you have). try to check again if problem still occurs. I will suggest you to check manual for the connections once more. Here is the link for the Manual.
After ensure everything is correct, if issue still persists contact Kenwood
Posted on Jan 14, 2008
SOURCE: kenwood kdc-x491 wiring diagram
red, yellow, black/ign constant ground
blue, blue white stripe/rem pwr ant
grays, whites, purples, greens/ front front rear rear
its the same on all headunits except cheap *** wal mart headunits
Posted on May 18, 2009
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