![]() The type of connector on a trailer largely depends on the kind of trailer. You’ll find trailer wiring using both four and seven-pin connectors. Do Most Trailers Use 4- Or 7-Pin Connectors? This can help ensure your food stays cool and you don’t risk spoiling any temperature-sensitive food. It can also allow you to run your refrigerator while you’re traveling. This circuit can charge your RV’s battery while you’re towing. One of the major advantages of a seven-pin connection is the 12-Volt circuit, especially when towing an RV. If your truck or SUV came with a tow package, it likely came with a brake controller. Using the electric trailer brake circuit will require a brake controller installation on your tow vehicle. If you’re using a seven-pin connection, you get all the same benefits but gain a 12-Volt circuit, an electric trailer brake circuit, and reverse lights. ![]() Four-pin trailer connections typically provide basic light functions only for the trailer, including running lights, turn signals, and brake lights. The three-pin difference between a seven-pin and a four-pin trailer connector is significant. The Difference Between 7 & 4 Pin Connectors Your tow vehicle will generate the power necessary to use these items on your trailer. This can include lights, turn signals, and even electric brakes. When you connect your trailer wiring to your tow vehicle, you’re sending power to various electronics on your trailer. Let’s take a closer look! What Does Trailer Wiring Do? So how do seven-pin and four-pin connectors stack up against each other? Knowing which type you’re dealing with and their functions is critical. Plugging in your trailer wiring is an essential part of towing.Īnd, if you’ve towed different trailers, you may notice some trailers have different wiring systems.
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