Here is a WIERD problem.

[Zack]

Whenever my AEM Wideband is turned on, it transmits a super high pitch frequency through the speakers.
If you cut power to it, it goes away.

Its the kind of noise only dogs should be able to hear.

Any thoughts on this? Ground is good.

Are there electrical filters out there I can buy to get rid of this?
QUITE ANNOYING, and its done it since it was new.

Click to read more...

 

[serb82]

Where is the power hooked up at? Is it its own ground or shared with other grounds?

 

[chet3310]

Sounds like the power wire is too close to the radio or speaker connection

 

[Zack]

Ill move everything and get back to y'all.

 

[serb82]

Location of wire on top of each other will not induce a sound.

I would guess you are either using a ground that is shared with other things in the car like the radio, or using the ign power wire off the radio.