Anyone know pos/neg speakerwires on a TrailBlazer?

[Majestic02]

Adding an amp and subs to the factory setup in my TB.  Anyone know which wires are positive and which are negative for the rear speakers?  This is where I am tapping in to for the amp.  The left side is yellow/brown and the right side is light blue/blue.

[DeezBlueZ]

I used the wiring code that came with my HU install kit.  I believe most newer GM vehicles are the same.  Check here for the wiring code breakdown.

[Majestic02]

Thanks!  That is exactly what I was looking for!

[DeezBlueZ]

No problemo man  It helped me out too.