I'll have to give that a try. The adapter I have has a switch for high and medium canbus, and everything else works, just not sure why this one doesn't show up. Could it be something related to the lack of a tow package? I don't have a break controller or anything else related to the Max Tow Package. I do have a hitch and trailer lights with the 6100lbs capacity. I only ask because one of the other forums I read about the turn signals in, mentioned when hooked to a trailer, they get 2 extra blinks automatically.