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Brake Controllers & Components

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Brake controllers are essential devices used in towing vehicles to control the braking force applied to a trailer, ensuring safe and efficient braking during towing. They are designed to synchronize the braking system of the tow vehicle with that of the trailer, preventing jerky stops and maintaining stability. There are two primary types of brake controllers: proportional and time-delayed. Proportional brake controllers adjust the braking force in real-time based on the tow vehicle's braking speed, offering smoother and more responsive braking that mimics the vehicle’s braking pattern. Time-delayed controllers, on the other hand, apply a preset braking force after a fixed delay, making them a simpler and more affordable option, though less responsive than proportional models.


Brake controllers come with varying capacities, typically capable of controlling between 2 to 8 brakes depending on the system's size and complexity. This capacity allows users to choose a controller that fits the specific needs of their towing setup, whether for smaller, light-duty trailers or larger, more complex trailers with multiple braking axles. Brake controller output can also vary, with digital controllers providing precise, electronic control over braking, offering better accuracy and customization for the towing experience. Manual controllers, while less sophisticated, allow users to manually adjust the braking force, providing more direct control and ease of use for certain applications.


When selecting a brake controller, it's important to consider both the type of braking system (proportional or time-delayed), the controller's capacity (number of brakes), and the output style (digital or manual). These components work together to ensure a safe, controlled, and efficient towing experience, whether you're hauling a small trailer or a heavy-duty load. Proper installation and use of a compatible brake controller are essential for maintaining the safety and performance of your towing system.

Frequently Asked Questions

Trailer brake controllers are electronic devices that work in tandem with your trailer’s electro-hydraulic or electric brakes system. The controller sends an electrical signal through a wiring harness to the trailer’s braking system.

Before learning how to use trailer brake controllers, truck trailer owners must examine the types of controllers available.

Time-Delayed Brake Controllers: 

Time-delayed trailer brake controllers apply braking force according to how long the vehicle operator’s foot remains on the brake pedal. These differ from regular brakes, in that the amount of pressure won’t have an impact on braking. As a result, drivers have less control over how hard they can brake, leading to less maneuverability of the trailer. The upside to time-delayed brakes is they are affordable and simple. When learning how to use trailer brake controllers, time-delayed brakes are the most intuitive option.

Proportional Brake Controllers: 

Proportional brake controllers apply braking force to trailers proportionally to how much pressure is applied to the tow vehicle. These brake controllers allow towing vehicles to come to a smoother halt, and at more instant speeds. This is especially useful and potentially life-saving when the need for emergency braking arises. Proportional brake controllers are the optimal choice for reliability, efficiency, and safety.

There are so many advantages to towing with a proper braking system that installing trailer brakes is nearly a necessity. Let’s examine why they’re so crucial.

They Put Safety First

Having a trailer brake controller for your towing rig is essential for safe and sustainable towing. These vital mechanisms drastically improve braking capability, enabling smoother, more effective stops. They mitigate trailer sway, which is the primary cause of towing accidents. Using trailer brake controllers is one of the most impactful and essential ways you can improve safety during your towing jobs. Trailer brakes also help distribute the braking effort through the trailer and the vehicle, rather than the vehicle brakes being solely responsible. The result is less damaging wear and tear on your vehicle’s brake system, preserving its functionality and value.

Avoid Becoming an Enemy of the Law

Federal law requires trailers of over 3,000 pounds to use a trailer brake controller for safety reasons. Not complying with federal and state laws can result in penalties, costly fines, and liability in the event of an accident. Don’t get caught without a quality trailer brake controller while towing a hefty load!

You might be eager to start using your trailer brakes once you get them, but take some time to learn how to use trailer brake controllers before diving in headfirst.

Getting You Trailer Brake Controller Set Up:

After installing trailer brakes on your towing vehicle, it’s time to get it figured out and configured. Adjust its settings, test the brakes, and assess manual override via the vehicle’s cabin interface.

Get The Settings Right:

Before your tow, adjust the controller’s settings according to the trailer’s weight and your towing conditions. These settings include brake gain, sensitivity, and more.

Test Them Out:
Once you’ve configured the settings, take your vehicle and trailer out for a test drive. In a safe location devoid of other drivers, begin driving at low speeds. A large lot will work. Slowly increase your speed to about 25 mph and apply the brakes. If the trailer’s braking is too delayed, that’s a clear sign to increase the brake gain. If the brakes seem to lock up too tight, you’ll want to lower the output. Keep testing until you’ve reached a braking setup that affords you accuracy and control.

Manual Override Control: 

The last step to really learning how to use trailer brake controllers is to get acquainted with the manual override controls. Many controllers feature this function in the form of a lever, allowing users to operate the trailer’s brakes without pushing down on the brake pedal. This capability can be instrumental in mitigating trailer sway and maintaining control during downhill towing.