Is Using a Brake Controller Necessary for Towing a Trailer

Question:

Do you have to have a brake controller box?

asked by: Randy B

Expert Reply:

If the trailer is equipped with electric brakes and you want them to actuate, you'll need a brake controller. A brake controller is a fairly small investment that will go a long way to keep you safer when towing.

There are two types of controllers, the older time-delayed variety and the newer proportional type.

I'd recommend going with a proportional controller like the Tekonsha Primus, part # TK90160. A proportional controller can sense how quickly the tow vehicle is braking, and will send the correct amount of voltage to the trailer brakes so the vehicle and trailer stop at the same rate. A time delayed controller will always send the same amount of voltage to the trailer brakes (according to how you've adjusted it) whether you've tapped on the pedal or having a full out panic stop. A proportional controller provides safer, more predictable braking. For a 2006 Ford F150, you'd also need a # 3035-P brake controller wiring adapter. If your truck isn't equipped with the factory installed 7-way, you'll also need the # 37185 adapter, and wire it as shown in the FAQ article I've linked for you.

If the trailer has hydraulic brakes that are operated by an electric pump, you'll need a controller that's compatible with an electric over hydraulic braking system, like the Tekonsha Prodigy P2, part # 90885.

If your trailer has a surge or hydraulic coupler that actuates by compressing when the vehicle's brakes apply, you won't need a brake controller. These are usually found on boat trailers.