I have a rear left speaker that is out and was told by a tech that it's most likely the amp that is bad, not the speaker. Before i go out a pay a fortune for an amp i'd like to know if anyone knows where i can get a wiring diagram for the pioneer amp, so i can try to bypass the amp to narrow it down to the head unit or amp.

Thanks.

 

when my amp went bad, i just got an old speaker, and adjusted the balance until i found the right in and out put points on the amp harnesses