![]() ![]() This wire is responsible for supplying power to any auxiliary lights that the trailer may have.įollowing these two wires is the left turn signal wire (usually green), the right turn signal wire (usually yellow), the brake light wire (usually white), and the reverse light wire (usually brown). The Aux wire is next and is usually yellow. This is usually the largest wire in the harness and is usually red, although other colors may be used. ![]() The 12V wire is the first wire in the wiring harness and carries the power necessary to run the trailer’s electrical components. The wires in the wiring harness are typically labeled from left to right and use the same labels as the pins in the plug. Each wire carries a different signal or type of power and needs to be connected correctly in order for the trailer to be safely towed. The wiring harness consists of several different wires that correspond to each of the seven pins in the plug. Understanding the Wiring Harness of the 7 Pin Flat Trailer Plug Each of these pins serves a specific purpose, and when connected correctly, will enable the trailer to be safely towed. These pins are labeled from left to right as follows: 12V, Aux, Left Turn Signal, Right Turn Signal, Brake Lights, Reverse Lights, and Ground. The plug contains seven pins that correspond to the seven connections in the wiring harness. The plug and harness together form a secure connection between the two and enable power and other signals to be sent between the two. The plug is the piece that fits into the trailer’s receptacle, while the harness holds the wiring that connects the plug to the vehicle. The 7 pin flat trailer plug consists of two primary components: the plug itself and the wiring harness. In order to help demystify the wiring diagram, this article will provide an overview of the different parts, their functions, and how they connect to each other. Understanding the wiring diagram helps ensure that the trailer is properly connected to the vehicle and that it is capable of safely transporting whatever it is intended to carry.įor those who are unfamiliar with these diagrams, it can be difficult to understand the various components and connections that make up the 7 pin flat trailer plug. It provides information on the different connections that make up the plug and how they can be used to tow a variety of things. The wiring diagram for a 7 pin flat trailer plug is an important tool for anyone towing a trailer. Understanding the Wiring Diagram for a 7 Pin Flat Trailer Plug
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