Trailer Wiring question
 

I've decided to throw some pods on for my reverse lights and need a little help determining what wires are what so I know where to tie my ground wire and power wire (reverse wire). I realize I can probe it but figured I'd come on here and see if anyone else has input before I started splicing away.
My wires are as follows (7 pin connector)
Right to left top- black purple, black blue, red, black orange,
Left to right second row - green brown, black, black, blue
ill throw some pictures up in just a little bit.

If you don't already have one, grab the service manual for your truck from here. Should have the diagram for ya. :)

Here you go...