2000 Toyota Avalon stereo makes loud humming noise when lig

Hi there,

thank you for the donation,

Could you please re state your question in the text field as it did not make it onto the question title.

mark (mhpautos)

with engine running, or not. when i turn on the lights it produces a loud humming noise thru the stereo. stereo is original equipment.

Hi there, OK, thanks for that, this can often be a bad earth problem battery, chassis, antenna all can cause this especially with the engine off, have you had any electrical work done recently?

mark (mhpautos)

no electrical work has been done in the past-original owner