-Guess-
"Brake controllers send a small amount of voltage along the brake output wire, if a trailer is connected, the magnets in the brake assemblies [OR your "Backlight"] will create a power draw. This power draw tells the controller that a trailer is connected."
If you have a power draw off...
@Ford Motor Company . I'm pretty sure that Ford won't care to answer, but I will ask:
Please clarify for the forum: Is it that Ford "Could care less" or "Couldn't care less" about early reservation holders?
Please Advise.