Blast from the past, but I’m curious to know what this ended up being. I have the same issue on my ‘23 Wildtrak. Noticed green fluid on the garage door last night. It appears to be trickling down the rear driver side suspension.
For anyone else who belatedly stumbles upon this post like me, skip trying to make the harness work. I tried to no avail. Just cut the harness down to power and ground and wire direct to the upfitter switch wires. Nothing else worked.
I took my Bronco to the dealership to fix this, but they accomplished nothing. Anyone willing to 3D print the seat rail bumper for me? I'll pay for materials and shipping, of course.