Hello everyone. I installed the AEM wideband and ever since I install that my stereo is making this high annoying pitch sound. I use the cigarette lighter for power. It is driving me crazy. If anybody knows what the heck is going on and can help me i would really appreciate it.
Thank you very much in advance

 

Where did you earth the gauge?

 

I agree with this guy.

I would reground it. I grounded mine on the steering wheel under the dash. I bet your sharing the same ground with the radio.

 

Nothing to worry about. Just feedback. Myself including a few others have the same problem.

 

Oh I think I grounded on my stereo ground. Well that makes seance lol thank you guys for the help.