So I went off roading the other day and now when my head unit/stereo is on I get altinator wind coming thru the speakers (when the RPM's of the motor increase so does the wind) Now I have an aftermarket head unit and the ground in the dash behind it is fine so my question is does anyone know where the ground from the headunit runs to? It must go to the body someplace any ideas? Im thinking it has a poor connection and its causing more resistance thus the speakers have found an alternate ground.