2001 Dodge Stratus wiring diagram

I need the electrical diagram for a 2001 Dodge Stratus R/T with the Infinity radio.  I am having trouble with the speakers and would like to troubleshoot the electrical system.  Does anyone have one or know where I can get one? 

  Well, to put it simply, the right rear speaker does not work.  I disconnected the wire from the speaker and used an ohm meter to check the continuity of the speaker.  it was OK.  Then I checked the voltage at the connector, it was minimal (less than 10mV). I pulled the deck out of the dash and there was a power harness and a speaker harness.  This car has 7 speakers and there was only 7 wires in the speaker harness.  I wanted the diagram for the audio system to see how the system was wired. I wasn't sure if the infinity system used an external or internal (to the deck) anplifier. 

I have located the amp under the front passenger seat. I found the wires that matched those for the correct speaker.  There was the same 10mv at the pins for the line level output.  From testing the other rear speaker, at the same volume level,  the signal should have been at about 100mV.  Therefore, I can only conclude that channel on the amp is fried.  Come to think of it, I did not check the output signal from the deck.

I bought the car with 12000 miles on it, so the last guy must have f****ed it up.  I am debating weather to contact the dealer, or just move up my time table for installing new components.  (2 subs, 2 amps, new speakers and head unit).  I am leaning toward the later.  Do you know if and what part of the audio system is covered under warranty?  I would still like the diagram for the audio system if you have it (jpeg or the like).