I have a 2001 4.4 with OEM trailer hitch. The guy I bought it from told me he had it installed by BMW after he bought the car for $1200. I don't know if that's true. I have never used the hitch myself. I assume all the wiring and stuff is there too, although I don't recall seeing anything. I suppose I could have it removed along with the assorted wiring and harnesses and sell it, if it's that hot an item.