I'm putting my factory Bose system back in. Everything looked simple enough...I disconnected the Pioneer head unit and wiring harness from the factory wiring harness and installed all the original speakers back in.

For some reason the rear 6x9's do not produce any sound. I have no idea why! I thought I put everything back as-is. Is there a difference between L and R with the Bose 6x9's? It's the only thing that I can think of.

I do not believe that the installers spliced into any factory wiring when the originally installed the after market system...it seemed like all they used was a wiring harness. What gives?