Info
Introduction
If you’re towing a trailer equipped with electric brakes, a brake controller is one of the most important pieces of equipment between your truck and trailer.
A brake controller allows the tow vehicle to send braking power to the trailer’s electric brakes when you slow down or stop. Properly adjusted, it helps the trailer contribute to the braking effort instead of relying entirely on the tow vehicle’s brakes.
For anyone regularly towing equipment trailers, dump trailers, campers, or other heavier trailers, choosing the right brake controller can make a significant difference in towing confidence and control.
In this guide, we’ll explain how trailer brake controllers work, the difference between time-delayed and proportional controllers, how to choose the right controller for your truck and trailer, how to adjust braking power, and what features are actually worth paying for.
We’ll also compare several popular brake controllers so you can find the right option for your towing setup.
Important: Trailer brake requirements and equipment requirements can vary by vehicle, trailer, and jurisdiction. Always follow your vehicle and trailer manufacturer’s specifications and applicable laws.
We’ll break down exactly what happens when you press the brake pedal—from the truck’s brake signal to the trailer’s electric brakes—and explain why proper controller adjustment matters.