I have installed a "Hidden Hitch" trailer hitch on my '08 MMH, it was a different type of installation, one hole on each side of the frame needed enlarged. And then a spring like wire is attached to the mounting bolts then you fish the wire through the frame, not too touch just requires a little patience.
Now for my question has anyone wired for the trailer lights, I have yet to find a kit to do this. My '98 Dakota had a kit with aaimple plug in adapter, no cutting of wires, slick and easy. Anyone know of a kit like that for the '08 FEH or MMH?