Alpine TME-M740BT Car Monitor "whines" Questions

ok im getting a whining noise through the speakers, and its not the grounds leading to the cd player, would it mabye be a ground issue within the cd player its self. the headunit has been in and out ...

bypassed the small internal speaker and ran it to a door speaker hookup behind the dash, now no sound at all I opened up my tme-m740bt took out the small speaker, ran speaker wire from the 740 to have