Went to the dealer and got the same terrible "instructions" in the package. Finally found this video from eTrailers which really details what you're supposed to do - http://www.youtube.com/watch?v=o5FkSILF7jU

Now how do i mount this damn 7-pin to the hitch receiver? Oh wait. It's already a topic: http://www.clubxterra.org/forums/showthread.php?t=4262

Thanks guys. You're more useful than someone who actually works for Nissan.