I couldn’t wait. I picked up the “N” harness and it has the gray connectors. I installed it along with the switch/lights/light harnesses, and made the changes in FORScan (Plain English). It works!!! With the switch and the cargo lamp button.
I'm in the same situation as you, 2024 F150 Lariat 3.5EB 501A less onboard scales/smart hitch. I ordered the "J" harness and it had the black taillight connectors, where I need the gray connectors. I went back to the dealership and they told me that the "EAD" harness is the "L" harness. We...