2015 Silverado Trailer Wiring Diagram

When it comes to towing a trailer, having the correct wiring is essential to ensure the safety and functionality of the trailer. In this article, we will discuss the wiring diagram for a 2015 Silverado and provide you with all the information you need to properly set up your trailer.

What is a Trailer Wiring Diagram?

A trailer wiring diagram is a schematic representation of the electrical connections required for a trailer. It shows how the various components are connected and which wires are responsible for transmitting power to the trailer lights, brakes, and other accessories. A proper wiring diagram is essential for proper installation and safe operation of your trailer.

Understanding the 2015 Silverado Trailer Wiring Diagram

The 2015 Silverado trailer wiring diagram is divided into three sections: power distribution, trailer brakes, and trailer lights. Each section has a specific set of components and wiring that must be correctly installed and connected to ensure proper functionality of the trailer.

Power Distribution

The power distribution section is responsible for providing power to the trailer’s brake controller and charging the trailer’s battery. It consists of a 40-amp fuse, a trailer battery charge relay, and a trailer brake controller connector. The trailer battery charge relay is responsible for charging the trailer battery while the vehicle is in motion.

To properly install the power distribution section, locate the 40-amp fuse in the engine compartment fuse block and connect the trailer brake controller connector to the vehicle’s brake controller harness. Next, connect the trailer battery charge relay to the vehicle’s battery positive terminal and the relay control circuit to the vehicle’s ignition switch through a 10-amp fuse.

Trailer Brakes

The trailer brakes section is responsible for applying the brakes on the trailer when the vehicle brakes are applied. It consists of a brake switch, a brake controller, and a brake output circuit. The brake switch sends a signal to the brake controller to apply the trailer brakes when the vehicle brakes are applied.

To properly install the trailer brakes section, locate the brake switch on the brake pedal assembly and connect the brake controller to the vehicle’s brake controller harness. Next, connect the brake output circuit to the trailer’s brake system.

Trailer Lights

The trailer lights section is responsible for powering the trailer lights and turn signals. It consists of a trailer connector, a parking lamp relay, a trailer turn signal relay, and a trailer running lamp fuse. The trailer connector is responsible for transmitting power to the trailer lights and turn signals.

To properly install the trailer lights section, locate the trailer connector at the rear of the vehicle and connect it to the trailer’s wiring harness. Next, locate the parking lamp relay and the trailer turn signal relay in the engine compartment fuse block and connect them to the vehicle’s electrical system. Lastly, locate the trailer running lamp fuse in the instrument panel fuse block and install a 10-amp fuse in the fuse holder.

FAQ

Question Answer
What is the purpose of the trailer battery charge relay? The trailer battery charge relay is responsible for charging the trailer’s battery while the vehicle is in motion.
What is the purpose of the brake switch? The brake switch sends a signal to the brake controller to apply the trailer brakes when the vehicle brakes are applied.
Where is the trailer connector located? The trailer connector is located at the rear of the vehicle.
What is the purpose of the trailer running lamp fuse? The trailer running lamp fuse is responsible for powering the trailer’s running lights.

We hope this article has provided you with all the information you need to properly set up your 2015 Silverado trailer wiring. Remember, proper wiring is essential for safe and functional towing. If you are unsure about any aspect of the wiring, consult a professional mechanic or electrician.