11/19/2023 0 Comments Trailer connector wire colors![]() RED WIRE (sometimes it's black on 7 pin wires): 12V auxiliary power. BLUE WIRE: For the brake system (electric breaks or the hydraulic reverse disable). GREEN WIRE: For right turn and stop signals. YELLOW WIRE: For left and right turn signals. BROWN WIRE: Power to the taillights and license plate. If you're wondering what the 7 core trailer wire stands for, here's a breakdown of the functionality based on the color: Only 6 pin connectors come close to the functionality of a 7 pin connector, but they are not as widespread. Smaller 4 pin connectors can only power the lights, but the 7 pin connector's additional pins leave room for auxiliary power, backup lights, breaks, and more. The functionality of the 7 pin connector far exceeds that of smaller connectors because it provides the fundamental lighting functionality needed including advanced brake systems. While it started being used on trailers, it is now commonly found on boats as well. This connector is becoming widespread on all heavy-duty vehicles. Most 7-way trailer plugs have a large 2" diameter connector that provides extra pins for 12V power and backup lights. If you use an older trailer that uses electric breaks and a 6 pin connector, you can replace it with a 7 pin connector for additional functionality. This wire has a lot in common with smaller wires such as 4 pin trailer wires due to the fact it provides the same core functionality but with additional features. The 7 core trailer wire is one of the newest-generation wires that became the go-to wire on all new heavy-duty vehicles. The latter is a round style that has smaller round pins. The most common style is the 'blade' style and it can be found on all the newest trailers. These two variations appear similar, however, you should identify which one your trailer uses before you purchase a new 7 core trailer wire. The 7 core trailer wire provides additional connectivity compared to its smaller sister connectors: The 6 core, 5 core, and 4 core.ħ core trailer wire is the only trailer wire type to have 2 sub-groups: 'Blade' and 'Round'. If the connector is located down under your Dodge Ram, then you will have to use a mounting bracket, because this will prevent any possible damages if the connector is left hanging.7 core trailer wire is used on large recreational and residential vehicles - it is the most advanced connector available that can supply the full range of trailer functionality including taillights, brake lights, turn lights, trailer breaks, reverse lights, auxiliary power, and a ground connection. Simply choose a wiring harness with necessary connector that has the correct number of pins for those very functions needed for your trailer. The parts that we carry are sourced from such companies as Curt, Westin, Hopkins, Tow Ready, Tekonsha, Bargman, Dorman, and many more. Our web store will easily aid you in purchasing all of the necessary Dodge Ram hitch wiring products. ![]() Our online store is ready to offer you plenty of hitch wiring products with different connectors (four to seven pins), that will allow the power to be transferred for lighting, and also for various secondary functions like trailer brake controllers, backup lights, or a power supply for the winch, or for the interior trailer lights. Well then, you have your trailer all hooked up to your pickup truck, and are all ready to go, but how about those trailer lights? If your trailer connectors don’t match up with the ones on your vehicle, or if your pickup truck doesn’t have a plug, read further on.
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