Rear Speakers arent working HELP!

[CLEAR]

I installed the Pioneer P3200bt in my 03 with Bose. I used the PAC cr2gm24. I just noticed that Im not getting any sound out of the rear speakers. When I move the fader to the rear, I get nothing. I am using the RCAs on the Pac unit hooked to the HU.

 

[gdddup]

kind of a dumb question but did they work before with stock headunit?

 

[CLEAR]

yes

 

[Jbird]

mine does the same thing. after installing my stock headunit again im starting to think those channels on the amp are blown

 

[CLEAR]

I figured it out. I plugged the rear radio back in. Does anyone have a schematic of it? What wire is illumination?