7 Pin Trailer Plug Wiring Colors 7 pin trailer wiring diagrams. below are the 7 pin trailer wiring diagrams for each of the three main types of trailers. even if your wiring color codes do not match up with that of the universal color coding listed earlier, the functions of each of the wires (regardless of color) will still match up with the same pins in the wiring diagram. Wiring diagram. here is a basic wiring diagram for a 7 pin trailer plug: connect the yellow wire to the left turn signal and brake lights. connect the green wire to the reverse lights. connect the white wire to the ground. connect the brown wire to the right turn signal and brake lights.
Wire Diagram 7 Pin Round Pin Trailer Plug Figuring out what color wire goes to what function is sometimes quite confusing. i have attached a diagram which covers both the most common wire colors designated for a seven pin trailer connector and a seven pin vehicle connector, referencing the wiring colors for each blade and what each blade is responsible for. To properly wire a 7 pin trailer connector, you’ll need to refer to a wiring diagram, which provides a visual representation of how the wires should be connected. the diagram will show you which wire should be connected to each pin on the connector. additionally, the diagram may also indicate the wire color for each function, making it easier. A 7 pin plug (sometimes referred to as the “7 way trailer connector”) is the connector and heavy duty wire that brings the necessary power and related functions to the trailer you’re towing. the connector is 2″ in diameter and is often found on heavy duty trailers such as rvs, cargo trailers, aluminum trailers, dump & landscape trailers. The seven pins in a trailer plug are labeled with numbers or letters for easy identification. here is a breakdown of the pin configuration: pin 1: this pin is used for the left turn signal or indicator lights. it connects to the corresponding wire on the towing vehicle. pin 2: the second pin is for the reverse lights.
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