Trailer wiring can be one of the most daunting aspects of your towing setup, especially if you don't have the necessary experience. 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.In this article, we'll guide you through the process of installing 4-pin wiring on a trailer plug. 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.Color Coding for 4 Pin Trailer WiringAn essential aspect of trailer wiring is color coding. Understanding the standard color code for a 4-pin wiring harness is vital before starting your project and making connections.The type of color code that you have for your wiring harnesses generally depends on your manufacturer. No one makes them the exact same way...