Towing a trailer is a great way to transport your goods or equipment from one location to another. Unfortunately, it can be a bit of a daunting task, especially if you’ve never attempted to connect a trailer plug before. This is because there are so many different types of trailer plugs and wiring diagrams to choose from. To make things easier, we’ve put together a guide on 7 wire trailer plug wiring diagrams.
What is a 7 Wire Trailer Plug?
A 7 wire trailer plug is a round connector that is used to connect the trailer to the towing vehicle. It is typically used on larger trailers and is designed to carry more power than a standard 4 pin plug. The 7 wire trailer plug is composed of seven different colored wires that correspond to a specific function. These wires are typically red, white, black, yellow, green, blue, and brown. Each of these wires is responsible for a different function in the trailer.
The Functions of Wires in a 7 Wire Trailer Plug
The seven wires in a 7 wire trailer plug are responsible for different functions. The red wire carries the power from the vehicle, while the black wire carries the ground. The white wire is responsible for the left turn and stop signal, while the yellow wire is responsible for the right turn and stop signal. The green wire is responsible for the running lights, while the blue wire is responsible for the brakes. Finally, the brown wire is responsible for the electric brakes.
How to Read a 7 Wire Trailer Plug Wiring Diagram
In order to properly connect a trailer plug, it is important to understand how to read a 7 wire trailer plug wiring diagram. A 7 wire trailer plug wiring diagram will typically show the following: the power source (red wire), the ground (black wire), the running lights (green wire), the left turn and stop signal (white wire), the right turn and stop signal (yellow wire), the brakes (blue wire), and the electric brakes (brown wire). Each of these wires will have a corresponding symbol that will help you identify the function of the wire.
How to Connect a 7 Wire Trailer Plug
Once you’ve identified the functions of the 7 wires, you can begin to connect the wires to the trailer plug. First, you’ll want to attach the red wire to the power source. Once that is complete, you’ll want to attach the black wire to the ground. Next, you’ll want to attach the white wire to the left turn and stop signal, and the yellow wire to the right turn and stop signal. Following that, you’ll want to attach the green wire to the running lights, and the blue wire to the brakes. Finally, you’ll want to attach the brown wire to the electric brakes.
Troubleshooting
If you’re having trouble connecting a 7 wire trailer plug, it might be helpful to take a look at the wiring diagram to ensure that everything is connected correctly. Double check that all of the wires are connected to the right terminals. Additionally, check that none of the wires are loose or have been damaged. If you’ve checked the wiring diagram and all of the connections and you’re still having trouble, it might be best to contact a professional electrician for help.
Tips for Connecting a 7 Wire Trailer Plug
When connecting a 7 wire trailer plug, it’s important to make sure that all of the wires are connected securely and that none of the wires have been damaged. Additionally, make sure that you have the right type of connector for your trailer. Finally, be sure to test the connection before you hit the road.
Conclusion
Connecting a 7 wire trailer plug can be a daunting task, but it doesn’t have to be. By understanding the functions of each of the wires and following the wiring diagram, you can ensure that your trailer is connected properly and safely. With a bit of patience and some knowledge, you can be confident that your trailer is connected correctly and that you’re ready to hit the road.
