When we bought our last trailer (new 2017 Northpoint 387RDFS), I thought the brakes were disconnected. I discovered that they don't really set them at the factory, which seemed odd, however, we spent some interstate time and I would use the brake controller to trigger the brakes; 5 or six times, lightly, in short bursts for about 300 miles, since the Northpoint had forward adjusting brakes. By the time we finished the day, we had adequate brakes, without the pickup helping!
Chuck and Jo Ann Culpepper
(Plus Max, Minnie, and Midget)
2016 Ellipse 42QD/2015 F-150 Eco Boost 4X2 Dinghy