![]() ![]() A 7-pin trailer plug does not, itself, control or engage the brakes themselves. Does a 7-pin Trailer Plug Control Brakes? You can use the top of the plug to orient you to the locations of the pins, each of which corresponds with a different function. ![]() This may help in orienting the wiring based on the location of the pins. That raised piece should be at the top of the plug. There is a raised portion on the circular plug. So, the most important thing to do when wiring in a new 7-pin plug is to make absolutely sure you’re coordinating the proper pin/wire with the proper function. Relying on wire colors may not be appropriate as different plugs use different wire colors for different functions. It’s always best to coordinate your plug blades/wires with the appropriate functions rather than by wire color. This is frustrating, but it’s an important fact to keep in mind. It’s also important to know that not all manufacturers color-coordinate their plugs in the same way. The answer to this important question is no.įirst of all, there are different types of 7-pin trailer plugs in general – not all are wired for RVs. It’s important to note that not all 7-pin plugs will be wired according to this same color pattern. The raised piece of the plug, shown on the top of the plug in this photo, can help to orient you to the pins. For this reason, it’s important to wire according to function as opposed to color. Note that not all 7-pin trailer plugs, and in fact not all RV plugs, are wired to the same color pattern. Yellow = backup/reverse or auxiliary lights.IN GENERAL, this is the wiring scheme you’re most likely to find on 7-pin RV trailer plugs: Let’s take a look at the wires of each of the 7 pins of one RV 7-pin trailer plug, in particular, to see what function is powered by each wire leading to those pins. And yes, these do include the trailer lights. The 7 pins on the plug deliver power/signaling to 7 different actions/connections on the trailer connector. The connector is 2″ in diameter and is often found on heavy-duty trailers such as RVs, cargo trailers, aluminum trailers, dump & landscape trailers, and car haulers. In order to do that, there must be power to the trailer.Ī 7-pin plug (sometimes referred to as the “7-way trailer connector”) is the connector and heavy-duty wire that brings the necessary power and related functions to the trailer you’re towing. So, when you’re about to make a turn or when you’re backing up or braking, your trailer needs to indicate these intentions and actions for other drivers to be able to anticipate. When you’re towing any type of trailer, it’s imperative that your trailer is capable of signaling to drivers behind you what your operating intentions are. 5) Can I Change My 4-Pin Trailer Plug to a 7-Pin Trailer Plug?.4) Does a 7-pin Trailer Plug Control Brakes?.3) Are All 7-Pin Trailer Plugs the Same?.It might sound simple but upon examination, there is meat to it. This might alert to a potentially induced problem, such as driving off with the 7 pin disconnected. However I have seen red tags that you can hang on your rear view mirror that can remind you that you might have your TV antenna up, or any number of things. Inducing a problem is as bad or worse than anything that might have happened in the first place. I'm usually unhooked when stopped, but I could see a scenario where I might stop for the night and encounter an unexpected dead battery situation.īut this brings up the potential of inducing a problem by forgetting to plug in your 7 pin and getting a ticket for it, and/or dragging your 7 pin connector for 100 miles and having to replace it. Thankyou for presenting this question, because I too have never thought about this issue. BTW, it is very detrimental to your batts to kill them, some cannot be recharged once they are completely drained, even if you can bring them back from dead the 100% discharge severely damages any battery, and your TV probably has 2 if it is a diesel. To risk killing your TV batts is not worth it. IMHO, any trailer, not just RV's should be disconnected, its too easy to do. I would rather be trying to figure out why my house battery was dead rather than why all my batts (rig and TV) were dead. If perhaps your charger fails, would you know it? Would you then be drawing off your 7 pin? Or perhaps your charger failed and your breakaway switch was engaged or "leaking current" and your brakes drained all your battery power. In a well maintained rig, your confidence can be high that nothing can happen. ![]()
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