Actually I don't want the trailer brakes to do anything. The load in trailer will be patio furniture, maybe riding lawnmower. My pickup can easily handle the braking. Just want to make sure the trailer wiring does not cause any issues for the truck.
More likely to have a short in the lights. For a long time Ford has had separate circuits and separate fuses for the trailer lights. If there is a short in the trailer that fuse will blow, but the lights on the truck will still work.