2010 ford fiesta stock stereo wiring diagram

I just wanna know what is the wiring diagram for the Stock Stereo. Mine is a 2010 Ford Fiesta. I just dont wanna mess up when i add an amp and a sub
I know it has been posted. For the speaker wires. But how about the color of wires of the direct current 12v, for the ignition switch, illumination, remote wire etc.? Can some one help me regarding these wires