I have looked at that location, and either I'm blind or dumb because I don't see any wire bundle as in the picture. What is visible is a closed box with 3 sets of wire bundles coming out and the joining together. I'll try and send a picture later. The manual keeps saying that there could be a bundle [if so equipped]. My only guess is that I have a Xterra not so equipped, but then why would Nissan suply a receiver and no wiring harness?