2005 chevy bose speaker wiring

I've looked for hours and can't find this info.  I'm trying to figure out on a 2005 chevy silverado with bose speakers which color wires go to the rear speakers.  Everything I find says blue/light blue but I don't think that holds true for the 2005 with bose.

I pulled pins out of the head unit connector in pairs to test output and this is what I come up with:

LR = Brown & GREEN / WHITE wires

RR = Black & Blue wires

I still need to know which is positive and which is negative.  Any help?

I'm trying to figure out on a 2005 chevy silverado with bose speakers which color wires go to the rear speakers.  Everything I find says blue/light blue, etc. but I don't think that's right for the 2005 with bose speakers and 6 disc changer.

I pulled pins out of the head unit connector in pairs to test output and this is what I come up with:

LR = Brown & Green w/white stripe wires

RR = Black & Blue wires

I still need to know which is positive and which is negative.  Any help?

I originally tried connecting an RCA adapter for amp to the back of the head unit, but there was almost no volume.  Only after that did I figure out that the bose amp was conveniently located under the center console and the std. gm wire colors were there.  I relocated the RCA adapter under the console and it works great now.  The location was actually very convenient.

I haven't noticed any problems with onstar, but then again I haven't tried it after installing the adapter.  I don't intend on using it anyway.  Thanks for the help.

By the way, there's not much room behind the rear seat for a subwoofer