Connect your vehicle to the trailer with the brake system and the settings that allow you to increase or decrease the sensitivity of the brake system.
Increasing the sensitivity will apply more pressure to the brakes, and decreasing it will apply less pressure.
You want to dial in the brake controller so you have the right amount of assistance from the trailer brake.
If you set your brakes’ sensitivity too high, the brakes will lock up and cause your tires to skid to a stop. However, adjusting your trailer brakes too lightly will tax your vehicle’s brakes too much.
Once you set your trailer brakes, you won’t likely have to adjust them as long as you’re hauling the same load.