09 Pontiac G3, Pumpkin Android 4.4, Wiring Questions

[benjoshyo]

Hello. I just bought an Android Car Stereo for my 09 Pontiac G3, for reference everything should be the same as an 09 Chevy Aveo. I've attached Pictures of the diagrams from both units as well as the color codes for the wiring harness adapter Scosche says I need: GM18B. One thing to note is that there is also an Orange/White wire on the adapter and it is not listed on the color codes.

Now, I can figure out all the speakers and positive and ground by myself. My mom would be so proud. But I'm a little lost with the rest of it. Any help would be greatly appreciated!

Adapter

Android Stereo

Factory Stereo

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[benjoshyo]

So I think I've got it mostly figured out. I'm still not sure what to do with the Orange/White and Blue/White Wires on the adapter though. Also, is it really necessary to connect the brake and reverse wires?