Originally Posted by RRizz View Post
Well, thats very helpful. OP, if you are having problems troubleshooting, take the simple route, and pull the unit out of the car, and bench test. If that goes well, you'll know the issue lies in your wiring somewhere. A little more information on your system setup will go a long way on here for those trying to help online as well. Many people come in looking for help, but the reality of it is, Its very difficult to do without being hands-on.
I understand that. the car is an '03 Malibu. The HU is wired straight to the speakers and to an external amp that goes into a sub box.