I have the bed lights and never use them. The only way to turn them on is the switch next to the headlight switch. If there was a switch in the bed or if it came on when you open the tailgate it would at least be usable.
I know this thread is a bit old, but I stopped in my local Leer dealer today since they won't return my calls, and it seems as of last Friday Leer no longer will sell caps for 2024 Rangers because of the J braces. Even if I purchase them and have them installed they will not sell me a cap.