I have 2020 Expedition King Ranch with the heave duty tow package. I'm getting a left blinker trailer fault when connect to two different trailers through the 7pin connection. Hazards work, right blinker works, running lights work, reverse lights work, left blinker does NOT work. Checked the voltage coming out of the truck side connection and it looks good. Any one know what fuse controls the lights? I checked all the fuses and they look good but might be worth replacing the fuse anyway, but the manual isn't clear on what fuse controls trailer blinkers. Anything else I should look at?