I just got done installing the Curt Hitch and wire harness. A couple of things to keep in mind about installing the hitch is that you have to drill two holes and trim down your exhaust heat shields. Also two of the bolts holding the heat shields on are not reinstalled when you install the hitch, so if you are having someone else install the hitch for you ask them to save the bolts for you. The hitch install took me about 1.5 hours by myself. If you did not get instructions (mine were missing) go to etrailer.com and they have them available to print out.
The wire harness was pretty much straight forward, the hardest/most time consuming part is running the wire to the battery, here is a video of the install. http://www.etrailer.com/tv-wiring-install-...-ford-edge.aspx