I'm scheduled for installation early December for the wiring harness, so if this isn't answered before then I'll try to respond back then with the part #
It’s a pretty darn easy DIY job. I didn’t even bother fishing it out to the bottom of the bumper. I won’t tow that much, so just left the connector curled up under the cargo floor and will lay it out under the bottom hatch seam to the trailer when needed:
