2019 Expedition Platinum
heavy duty tow and trailer assist

is there a separate fuse for the trailer left brake and turn light?
not listed in the Owners manual.

When i I attach my trailer I get an advisement that the left brake and turn signal light isn’t working. Confirmed visually.
I started troubleshoot with the car (only 1500 miles). Disconnected trailer and connected light test module to the truck. Tester shows no power to left turn signal and left brake. All other light powers check ok.

Trying isolate problem to a specific fuse or a wiring problem.

Anyone know if a separate fuse is used for trailer left side?