Wiring help for Pioneer AVIC-F90BT 2011 Ram

I have a 2011 Ram 1500 with the V6, wiring help. I need some help finding wire color for the speed signal input to the computer or a pin out of the computer. I would also like to know if there is a closer place to hook up the reverse wire, other than running a wire to the back up light it self. I have all the other wires connected except that.

Thanks for any help you can give me.