I have my Rio Car feedning into the AUX input on my Clarion HU via the front speaker out cables.

This morning i noticed that i was getting some very disturbing whine from my speakers on ly when i switched to AUX (using the Rio). When i switched to other sources i did not have this problem.

However, and this is where it gets interesting...if i leave the Clarion on AUX and REMOVE the Rio from the sled the whine does not go away, but instead varies in both speed (with engine RPM) and intesity (from soft to screaching).

Now...i wonder how this could happen if there is no conduit for the power in the cage to reach the RCA's if the Rio is not installed.

I'm thinking that perhaps the RCA connecting the cage to the Clarion are bad...or that there is a short somewhere in the connector on the cage where the hot wire may be frayed and it is somehow touching the RCA outs.

So that begs the question...when the Rio is set up in ths manner is current flowing to the cage connector even though the Rio has been removed?

Lots of question/issues/possibilities and i would be eager to hear all your thoughts!

oh..and to make matters worse...eventually the whine went away with the Rio both in and out of the sled and Clarion set to AUX.

textbook case!!!

thanks,

Ed