[ike84]

Yes, I assumed as such. This is a common problem with aftermarket audio installs.

You have a headset, yes ? (I'm assuming your system isn't wireless)

Try this (for 3.5mm back) - https://www.amazon.com/BESIGN-Ground-Isolator-Stereo-System/dp/B06XQYN77L/ref=asc_df_B06XQYN77L/?tag=hyprod-20&linkCode=df0&hvadid=198076596450&hvpos=&hvnetw=g&hvrand=1257800385607848135&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=21156&hvtargid=pla-350233567378&psc=1

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