hey guys, i don't know much anything about audio stuff. in my car i have the stock headunit. it's the dual cassette and cd one. i tossed the cd portion. when i turn the radio on i don't get anything coming out of the speakers, except the rear passenger side speaker i can hear a little music. i have the volume turned all the way up. how can i start trouble shooting where my problem is? oh yeah, i think i have aftermarket speakers in the front, haven;t checked the back yet. thanks in advance.