![]() ![]() How does a 7-pin trailer plug work?Īt it’s very foundation, all the 7-pin trailer plug does is allows the towing vehicle to provide power to the trailer. It’s just a good idea to know what each wire means and generally how it works so you can troubleshoot any problems that might arise. Of course, you don’t need to be an electrical engineer to understand this trailer connector. Knowing how each pin on the plug works will help you ensure your connection is secure and functioning properly. They’re typically weather resistant and have an ergonomic design so you can easily connect trailers to your car or truck.īut there’s a bit more to them than just a plug. This type of connector allows you to safely and correctly connect your tow vehicle to a trailer with up to seven different electrical connections. Whether you’re new to RVing or an experienced veteran, the 7-pin trailer plug is a must-have item for connecting your vehicle to your RV. With proper troubleshooting techniques and some basic knowledge about the wiring connections, any issues should be easy enough to resolve quickly so you can get back on track. While you may need an adapter in order to use either type of connection, understanding how each one works can help you make sure everything runs smoothly when you hit the road. This type of connector is ideal for larger trailers with multiple accessories on board since it provides more power than the 4-pin connector. We know everything about trailer parts and wiring, so we’re happy to help no matter what snarl of wires you’re faced with, or no matter how many outlets you need replaced.When it comes to connecting a trailer to your vehicle, having a 7-pin trailer wiring plug is essential for ensuring that all of your accessories have power and are functioning properly. We sell nation-wide, but our Texas hospitality comes through in every call. More Questions About 7-Way Trailer Light Wiring?Ĭall or contact The Trailer Parts Outlet. ![]() But go with 12 gauge for grounding, brake power, and battery hot lead wires. Generally, the smallest recommended size for a 7-way trailer plug is 16 gauge on turn signals, brake and reverse lights, and the running light wires. What Size Wiring for a 7-Way Wiring Harness Also, if you have some non-standard harness, you should definitely choose this option. That should help you figure out the intended function of each wire. ![]() You can always determine which wire is which using a circuit tester. Let’s say you bought a used trailer with tons of unlicensed DIY work. Trailer wiring is designed in accord with the practices of the Society of Automotive Engineers, or SAE.Ĭolor Coding for SAE Standard Trailer Light WiringĬolor Coding for RV Standard Lights Wiring The color coding on your harness is going to vary depending on whether you’ve got a trailer or an RV. Two Types of Wiring to Know: SAE Standard or RV Standard So grab a wiring kit, and some properly gauged wire, and let’s get to work. Let’s learn classic color coding for your trailer so you can get your lights shining again with minimal…sparks. You have a worn-out wire or some other electrical failing, and some savvy trailer knowledge or clever Googling on your part has taught you that you have 7-way trailer wiring.īut sadly, every wire is a different color, and you have no idea why. Manage orders and track shipping Log in/Sign up
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