My 960 has 6 speakers in it. 2 on dash and one in each door, front and rear.{3/side} The dash speakers work correctly, but the door speakers do not. I pulled one door panel to see if the speaker was hooked up and it was. I am assuming the other three are hooked up also.
I have played with the fader switch no luck
I have played with right and left balance no luck. and a combination of both. I can understand one speaker not working , but all 4?
Anyone have this experience? Perhaps my radio is bad?
Any suggestions would be appreciated.

 

I would check that the speakers are still grounded first. Then check to see if i was getting power from the radio with a multimeter to verify voltage to the speakers. You can isolate whether it is the speaker or the wiring that way. Sounds like to me a connector behind the radio has worked loose a bit.