Trailer Breakaway System Wiring Diagram

Trailer breakaway system is an important safety feature that can save lives and prevent damage to both the trailer and the towing vehicle. It is a small device that activates the trailer brakes in case the trailer becomes detached from the towing vehicle. The breakaway system consists of a battery, a switch, and a cable that connects the trailer to the towing vehicle. When the cable is pulled, the switch activates the battery, which in turn powers the trailer brakes.

Why is a Trailer Breakaway System Important?

A trailer breakaway system is important because it can prevent accidents caused by runaway trailers. When a trailer becomes disconnected from the towing vehicle, it can quickly become a deadly projectile. The trailer breakaway system ensures that the trailer comes to a safe stop by activating the brakes.

Trailer breakaway systems are required by law in many states, and in some cases, failure to have a working breakaway system can result in fines and even jail time.

How to Install a Trailer Breakaway System

Installing a trailer breakaway system is a relatively simple process that can be done by anyone with basic electrical knowledge. Here are the steps:

  1. Find a suitable location for the breakaway switch on the towing vehicle. It should be easily accessible and visible.
  2. Mount the breakaway switch using screws or bolts.
  3. Connect the blue wire on the switch to the blue wire on the trailer’s wiring harness. This wire is for the brake signal.
  4. Connect the black wire on the switch to the negative terminal on the battery. This wire is for ground.
  5. Connect the red wire on the switch to the positive terminal on the battery. This wire is for power.
  6. Connect the cable from the trailer to the breakaway switch. The cable should be long enough to allow for turns and movement of the trailer.
  7. Test the system to make sure it is working properly.

Trailer Breakaway System Wiring Diagram

Here is a wiring diagram for a trailer breakaway system:

Wire Color Description
Blue Brake signal
Black Ground
Red Power

As you can see from the diagram, the blue wire connects to the brake signal on the trailer’s wiring harness. The black wire connects to the negative terminal on the battery, and the red wire connects to the positive terminal on the battery.

FAQ

What happens if the trailer becomes detached from the towing vehicle?

If the trailer becomes detached from the towing vehicle, the breakaway switch is pulled by the cable, which activates the battery. The battery then powers the trailer brakes, bringing the trailer to a safe stop.

How do I test my trailer breakaway system?

To test your trailer breakaway system, first make sure the trailer is not connected to the towing vehicle. Pull the cable on the breakaway switch. You should hear the sound of the trailer brakes activating. If not, there may be a problem with the system.

Can I install a trailer breakaway system myself?

Yes, you can install a trailer breakaway system yourself if you have basic electrical knowledge. However, if you are not comfortable with electrical work, it is best to have a professional install it for you.

Do all trailers require a breakaway system?

No, not all trailers require a breakaway system. However, many states have specific laws regarding when a breakaway system is required. Check with your local DMV for more information.

Is a trailer breakaway system a legal requirement?

Yes, in many states, a trailer breakaway system is a legal requirement. Failure to have a working breakaway system can result in fines and even jail time.