Adam, I'll have dig around and see if I still have pics of the backs.. I'm not sure if I do though. Here's a link to a schematic that I did to show hook ups. The pins are small, I used crimped down .101 female spade terminals for the connections then used hot glue to make a sort of a plug to keep them in alignment.
I'm not sure why the tailgate switch is more than the rest, it's just a momentary switch with the back light in it and an on indicator. Works very well though. I put mine in and love it! With the dash off I rearranged my switches on the right side and put the tailgate release in place of the cruise control. I have access to it from both sides of the truck and it's by itself to avoid accidentally activating it.