Don't put the BackOFF XP device(s) under the fender.
That was a major screw-up. The wife and I went for a day cruise for the first time since the install. Both turn signals, the plate illumination bulb/harness and the modulator devices were ripped out from the underside. I thought Gorilla Glue was good stuff (vibration must have broken the grip) and those Alabama speed bumps (CSX RxR crossings) didn't help either. The dear little woman only added 112#. Now having to rebuild the wiring harness; and, blew 3 fuses.