The 2015 GMC Sierra 2500 is a rugged, dependable vehicle that can tow some serious loads. With its upgraded trailer wiring harness, it’s also easier than ever to safely and securely connect your trailer to the truck. We know that understanding how to properly wire your trailer can be confusing, so we wanted to provide a comprehensive guide for connecting your trailer safely and securely.
Whether you’re a DIY enthusiast or a professional, understanding the fundamentals of trailer wiring can help ensure a safe and secure connection. We'll cover the basics of trailer wiring diagrams, including colors and wiring configuration.
To begin, let’s take a look at the 2015 GMC Sierra 2500 trailer wiring diagram. As you can see, it’s made up of seven different wires. The white wire is the ground wire, which connects to the frame of the trailer. The brown wire is the taillight wire, which provides power for the trailer's lights. The green wire is the right turn signal/brake light wire, and the yellow wire is the left turn signal/brake light wire. The blue wire is the auxiliary power lead, which is used to power accessories on the trailer. The black wire is the 12V power wire, which supplies power to the trailer brakes. Finally, the red wire is the electric brake controller connection wire, which connects the trailer brake controller to the vehicle's brake system.
Now that we’ve taken a look at the trailer wiring diagram, let’s discuss the basics of wiring. To begin, make sure that all of the wires are in a good condition. Then, use a test light to check the connections for proper voltage. Next, run the wires from the trailer to the truck, making sure to use butt connectors to secure the connection. Make sure to adhere to the wiring diagram as you connect the wires.
Finally, use a few layers of electrical tape to protect the connections. This will help prevent corrosion and ensure a secure connection.
By following these simple steps, you can easily and safely connect your trailer to the 2015 GMC Sierra 2500. For further help, be sure to consult a certified expert. With a little bit of knowledge, you can ensure a secure and reliable connection every time.