Trailer wiring can seem like a daunting task, but with the right information, it can be easy to understand and complete. One of the most common trailer plugs used on trailers is the 6 round connector. In this article, we will discuss the 6 round trailer plug wiring diagram in detail. We will cover the different wires and what they are used for, as well as frequently asked questions about trailer wiring.
The 6 Round Trailer Plug Wiring Diagram
The 6 round trailer plug is used on many types of trailers, including horse trailers, cargo trailers, and RV trailers. The plug has six pins or terminals, which are used to connect the trailer’s electrical system to the tow vehicle. Each pin or terminal is responsible for a specific function, and it is essential to understand these functions when wiring the trailer plug.
Pin 1 – Ground
The first pin or terminal is the ground. It is usually the white wire in the trailer harness, and it is connected to the trailer frame. The ground is essential because it provides a path for the electrical current to return to the vehicle’s battery. Without a good ground, the trailer’s electrical system will not function correctly.
Pin 2 – Brake
The second pin or terminal is used to control the trailer brakes. It is usually the blue wire in the trailer harness, and it is connected to the brake controller. This pin is not always used, as some trailers do not have brakes.
Pin 3 – Tail Lights
The third pin or terminal is used for the tail lights. It is usually the brown wire in the trailer harness, and it is connected to the trailer’s tail lights. When the vehicle’s headlights are turned on, the tail lights on the trailer will also turn on.
Pin 4 – Left Turn Signal and Brake
The fourth pin or terminal is used for the left turn signal and brake lights. It is usually the yellow wire in the trailer harness, and it is connected to the left turn signal and brake lights on the trailer. When the left turn signal is activated, the left brake light and the left turn signal on the trailer will flash.
Pin 5 – Right Turn Signal and Brake
The fifth pin or terminal is used for the right turn signal and brake lights. It is usually the green wire in the trailer harness, and it is connected to the right turn signal and brake lights on the trailer. When the right turn signal is activated, the right brake light and the right turn signal on the trailer will flash.
Pin 6 – Auxiliary
The sixth pin or terminal is used for auxiliary functions, such as backup lights and electric trailer brakes. It is usually the black wire in the trailer harness, and it is connected to the appropriate function on the trailer.
FAQ About Trailer Wiring
Do all trailers have brakes?
No, not all trailers have brakes. Trailers with a gross weight of less than 3,000 pounds and trailers that are less than 10 feet long do not require brakes by law.
Do I need a brake controller to tow a trailer with brakes?
Yes, a brake controller is required to tow a trailer with brakes. The brake controller is connected to the vehicle’s brake system and applies the trailer’s brakes when the vehicle’s brakes are applied.
What is the difference between a 4-way and a 6-way trailer plug?
A 4-way trailer plug has four pins or terminals and is used for trailers that do not have brakes. A 6-way trailer plug has six pins or terminals and is used for trailers that have brakes and other auxiliary functions.
What is the maximum weight that can be towed with a 6 round trailer plug?
The weight that can be towed with a 6 round trailer plug depends on the specific vehicle and trailer. It is essential to consult the vehicle and trailer owner’s manuals for towing capacity and weight limits.
What do I do if my trailer plug is damaged?
If your trailer plug is damaged, it is important to replace it as soon as possible. A damaged plug can cause electrical problems with the trailer’s electrical system and can also cause safety issues on the road.
Conclusion
Understanding the 6 round trailer plug wiring diagram is essential for anyone who tows a trailer. Knowing which wire goes where and what each wire is responsible for can help ensure that the trailer’s electrical system functions correctly. Frequently asked questions about trailer wiring can also help provide important information about towing a trailer safely and legally.
| Pin | Wire Color | Function |
|---|---|---|
| 1 | White | Ground |
| 2 | Blue | Brake |
| 3 | Brown | Tail Lights |
| 4 | Yellow | Left Turn Signal and Brake |
| 5 | Green | Right Turn Signal and Brake |
| 6 | Black | Auxiliary |
