and How to Make AdjustmentsUsing a brake controller while towing a trailer involves setting up the controller, adjusting trailer brake gain, adjusting braking sensitivity, manually activating the trailer brakes and possibly choosing a few personal settings.In this guide we will walk through how a trailer brake controller works and the steps involved inhow to use a brake controllerwhile towing with trailer brakes.If you need to adjust your trailer brakes, check out our guide!What Is a Brake Controller?A brake controller is an electronic device that regulates the electric trailer brakes. It allows the driver to activate and monitor trailer brake activity from the cab of the vehicle.A brake controller mounts in the cab of the vehicle and generally has a few different controls, such as an interface to view braking information and buttons to control the output and manual activation. Trailer brake controllers come in many different styles and capacities.Need help installing your brake contro...