According to the checklist to flat tow the Bronco you have to place the Bronco in 2H before you select neutral tow. I haven’t checked it out but I don’t think it will meet the parameter to select neutral tow until you put it in 2H. If it is in 4A it shouldn’t let you go into neutral tow.
With the curt wiring harness you will only have the red lights operating as brake light and turn signal. The yellow turn signal light that is on the Bronco will not work with this harness. I have 2 plug and play harnesses and neither will operate the left turn signal lights. I finally gave up...
My wife’s 2022 Bronco OBX would not come out of neutral tow when arriving at campground. I talked to my local dealership after not being able to get it into a local Ford dealership. After confirming it was still in neutral tow I hooked it back up and towed it back home. The service department...