Wiring Diagram for a 6 Way Trailer Plug

Hello and welcome to our comprehensive guide on the wiring diagram for a 6 way trailer plug. In this article, we will provide you with detailed information on the various components and connections involved in setting up a 6 way trailer plug. Whether you are a seasoned DIY enthusiast or a beginner looking to understand the intricacies of trailer wiring, this article will serve as an excellent resource for you.

1. Understanding the Basics

Before we delve into the details of the wiring diagram, let’s first understand the basics of a 6 way trailer plug. This type of plug is commonly used for trailers that require the connection of six electrical circuits. Each circuit serves a specific purpose, such as powering the brake lights, turn signals, tail lights, and more. It is crucial to have a proper understanding of these circuits to ensure safe and effective trailer operation.

2. The Components

A 6 way trailer plug consists of several components, including the plug itself, wiring harness, and the trailer connector. The plug is typically made of durable materials like plastic or metal and features six pins or connectors to facilitate the electrical connections. The wiring harness is responsible for carrying the electrical signals from the towing vehicle to the trailer, while the trailer connector ensures a secure and reliable connection between the trailer and the towing vehicle.

3. Wiring Diagram

Now let’s dive into the wiring diagram for a 6 way trailer plug. The diagram illustrates the correct placement of wires and pins for each circuit. It typically includes color-coded wires for easy identification. Here is a breakdown of the connections:

Pin Function Color
1 Ground White
2 Left Turn Signal Yellow
3 Brake Lights Red
4 Tail Lights Brown
5 Right Turn Signal Green
6 Electric Brake Blue

It is essential to ensure that the wires are properly connected to their respective pins to avoid any electrical malfunctions or safety hazards.

4. Advantages of a 6 Way Trailer Plug

The 6 way trailer plug offers several advantages over other types of plugs. Firstly, it provides a standardized and organized approach to trailer wiring, making it easier for users to connect their trailers to various towing vehicles. Secondly, the 6 way plug allows for the connection of multiple circuits, enabling the trailer to have separate power sources for different functions. This can be particularly useful when troubleshooting electrical issues or when specific circuits need to be disabled.

5. Disadvantages of a 6 Way Trailer Plug

While the 6 way trailer plug has its advantages, it is not without its drawbacks. One of the main disadvantages is the limited number of circuits it can accommodate. If your trailer requires more than six electrical connections, you may need to consider using a different type of plug or installing additional wiring components. Additionally, the wiring complexity may be higher compared to simpler plug types, requiring more time and effort for installation and maintenance.

6. Alternative Wiring Diagram

If the 6 way trailer plug does not meet your specific requirements, there are alternative wiring options available. One common alternative is the 7 way plug, which provides an additional circuit for auxiliary power or charging the trailer’s battery. The 7 way plug follows a similar wiring pattern as the 6 way plug, with an additional pin and corresponding wire color. It is crucial to consult the wiring diagram for the specific type of plug you are using to ensure proper installation and compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use a 6 way trailer plug on a vehicle with a 7 way trailer connector?

A: Yes, you can use a 6 way trailer plug on a vehicle with a 7 way trailer connector. However, you will need an adapter to bridge the connection between the two different plug types. The adapter ensures that the correct circuits are connected, allowing for seamless communication between the towing vehicle and the trailer.

Q: What if my trailer requires more than six circuits?

A: If your trailer requires more than six circuits, you may need to consider using a different plug type or installing additional wiring components. The specific solution will depend on your trailer’s requirements and the towing vehicle’s capabilities. It is recommended to consult a professional or refer to the trailer and vehicle manufacturer’s guidelines for proper wiring instructions.

Q: Can I install a 6 way trailer plug myself?

A: Yes, if you have basic electrical knowledge and experience, you can install a 6 way trailer plug yourself. However, it is crucial to follow the wiring diagram precisely and ensure that all connections are secure and properly insulated. If you are unsure or uncomfortable with the installation process, it is always recommended to seek professional assistance.


In conclusion, understanding the wiring diagram for a 6 way trailer plug is crucial for safe and effective trailer operation. By following the correct wiring connections and considering the advantages and disadvantages of this plug type, you can ensure a reliable and hassle-free towing experience. Remember to consult the specific wiring diagram for your trailer and towing vehicle to ensure proper installation. If in doubt, seek professional guidance to avoid any potential electrical issues or safety hazards.