![]() ![]() One of the most important things to remember when connecting your white ground wire is to ensure that the area is clean. Trailer kits can also be quite handy as they include trailer lights in their package. If you do not need to replace your wiring, then that's fine, but you can purchase new trailer wiring should the need arise. Remove your trailer's old lights before installing your trailer wiring. Gather all of the tools that you'll need, including your trailer's new lights. It's always a good idea to be as prepared as possible. Let's get into the guide by starting with your trailer wiring side! Prepping for Trailer Wiring Side Connections Step 1: Set up Trailer Wiring Your wires are in order, so you can start preparing to wire your 4-pin trailer plug. The foundations for success have been set out. You can find corresponding connections by activating the functions of your harnesses on your circuit board. Alternatively, you can access your vehicle's circuit system with a circuit tester that will allow you to test your wires to determine their function.īehind your vehicle's taillights, you'll find your vehicle's wiring system. Keep your vehicle's owner's manual on hand to be sure that you are making the correct connection. If your manufacturer used red and black wires instead of a green wire, brown wire, and yellow wire, the red wire is for your brake lights and turn signal, and the black wire is generally for running lights.The white supplies power to the brake lights, reverse lights, turn signals, tail lights, turn signal, and add auxiliary power. The white wire is extremely important as it is the power wire. The suggested minimum gauge for a white wire is 16. You should, in turn, connect the white wire to your trailer's ground point. You should attach the white wires to the vehicle's wiring harness, where you will find an uncoated metal. White cables have the function of allowing you to ground your vehicle.The suggested minimum gauge for brown wire is 18. Finally, connect the brown wire to the trailer's taillight on your trailer wiring side. Attach the brown wire to the vehicle's wiring harness on the vehicle area where your taillight is. The brown wire is used to power the running lights and tail lights.The suggested minimum gauge for yellow wire is 18. You should attach the yellow-colored wire to the vehicle's wiring harness on the vehicle wiring side, indicating "turn left." You connect the yellow wire to the trailer's left turn signal on your trailer wiring side. Yellow wires have the role of powering the left turn signal and left brake light.The suggested minimum gauge for green wire is 18. Attach the green wire to the vehicle's wiring harness on the vehicle area, indicating "turn right." You should, in turn, connect the green wire to the trailer's right turn signal in your trailer area. Green wires have the function of powering your right turn signal and right brake light feature on your brake controller.Here's a walkthrough of the general color coding system for wiring a 4-pin trailer plug: ![]() Typical trailer wiring colors include brown, yellow, green, brown, and at times red and black wires. No one makes them the exact same way, but some standards allow for common ground and easy identification. The type of color code that you have for your wiring harnesses generally depends on your manufacturer. Understanding the standard color code for a 4-pin wiring harness is vital before starting your project and making connections. Color Coding for 4 Pin Trailer WiringĪn essential aspect of trailer wiring is color coding. Our guide will talk about color coding, wiring a 4-pin trailer plug from your trailer side and your car side, equipping your vehicle for proper towing, and a few bonus tips that might come in handy. In this article, we'll guide you through the process of installing 4-pin wiring on a trailer plug. You don't need to have a professional install your wiring if you want to turn your car into the perfect tow vehicle installing 4-pin wiring can take a few hours, but it is a manageable task with rewarding results. Trailer wiring can be one of the most daunting aspects of your towing setup, especially if you don't have the necessary experience. How to Wire a 4 Pin Trailer Plug: Step-by-Step Guide ![]()
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