I went with the OEM hitch and harness. Hitch install was straightforward. I recommend getting the HF rivet tool and sample kit of plastic rivets to reattach your fender trim. Harness was a challenge routing it up to the front passenger area because of all the panels and sills you had to remove. As others have done, I did not cut the HUGE opening in the rear valance. I had a friend help narrow the factory provide trim frame and rotate the plug mount downward for access from below. A much cleaner appearance, but a little more difficult to install your tow bar and connector your trailer harness.

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Chris DeJesus
'09 X5 X-Drive 35D
'15 Porsche Cayenne Diesel
'05 Porsche Cayenne-TRADED-IN
'95 LR Disco I-SOLD
'62 Apache Eagle Pop-up Camper-SOLD
'15 Flagstaff Micro Lite 23LB (Our HoW, House on Wheels)-SOLD