Six Pin Trailer Wiring Diagram

By | June 2, 2021



Understanding a Six Pin Trailer Wiring Diagram



A trailer wiring diagram can help you identify the wiring and electrical components needed for the proper operation of your trailer. However, many people find it difficult to understand and interpret a six pin trailer wiring diagram. This article will explain the different parts of a six pin trailer wiring diagram in an easy to follow manner.



Whether you are looking to properly install a new electrical system in your trailer or just want to understand maintenance and repair for an existing one, understanding the pieces of a wiring diagram is a critical skill. Having an understanding of the wiring diagram will help you troubleshoot any issues you may have with the electricals on your trailer.



Overview of the 6 Pin Trailer Wiring Diagram



The most common trailer wiring diagram is the 6 pin system. It consists of 6 wires that attach to the trailer and correspond to the trailer manufacturer's specifications according to the type of trailer being connected. Depending on the trailer, the diagram will be slightly different in how the wires are connected.



Each of the 6 pins represents a function within the trailer’s electrical system: left/right turn signals, brake light power, ground, back-up lights, auxiliary power, and electric brakes. The diagram will show the color coding for each wire so you know where to attach them for the trailer to properly function.



Terminal Connections in 6 Pin Trailer Wiring Diagrams



The connections for the 6 pin trailer wiring diagrams are generally as follows:




  • Left turn signal / Brake light - Brown

  • Right turn signal / Brake light - Green

  • Brake Light Power - Blue

  • Ground - White

  • Back-up Lights - Black

  • Auxiliary Power - Red

  • Electric Brakes - Yellow



Trailers usually require a 7-pin system, and this is also available as a diagram. Connecting this type of system requires additional wires beyond the six wire system, with two more wires for powering trailers with electric brakes and a reverse connection.



Install Your 6 Pin Trailer Wiring Diagram



Once you have the 6 pin trailer wiring diagram, the installation process is fairly simple. First, you need to attach the wires to the appropriate trailer connector, making sure to use the correct color coding for each wire. Then, attach the plug to the back of the vehicle. Make sure that the plug is secure and that the pins are pushed all the way into the plug.



Lastly, you need to make sure that the trailer is grounded, which can be done by running a separate wire from the frame of the trailer to a metal grounding post at the rear of the vehicle. Once the ground is secured, you should test the trailer to ensure that all the electrical components are functioning properly.



Conclusion



Having the right knowledge of a 6 pin trailer wiring diagram can be invaluable when installing or repairing a trailer’s electrical system. By understanding what each of the 6 pins are responsible for, you can ensure that your trailer is connected and working properly. Taking the time to properly install the wiring and connectors will prevent any issues down the line and ensure that your trailer’s electrical system is working as intended.


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