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If you have a connector that is located under the vehicle you might want to connect it to the vehicle by using a mounting bracket to help prevent damage from a angling wire. You need to make sure that you choose a connector with the appropriate number of pins for the required functions of your trailer or towed vehicle. Trailer or towed vehicle wiring can be confusing with all of the different purposes for connectors that you might not be aware of. Trailer wiring and choosing the right one for your application. Although most manufacturers use a standard color code, there are going to be those few that could stray from the norm.With all the different shapes and sizes of connectors it's not always easy when it comes to
4 PIN TRAILER WIRING DIAGRAM HOW TO
One is for electric brakes and the other pole is a 12v source for anything else requiring electric.īe sure to follow your vehicles operating manual for instructions on how to make proper connections when using any of these type connectors. The 6-wire connector shown here has 2 additional poles. Of course the more items you have the more poles you will need on your connector. The 4-way above is a basic and most common scenario, but what if you have more items that require wiring. To wire a trailer, the first step is to determine what components on the trailer need wiring. If you have a U-Channel or angle iron construction, then you can purchase specially made clips from most automotive stores that attach to the frame which will keep your wiring tight inside the frame and out of the way. Be sure to seal your holes when done to prevent water from filling up your frame.
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If your frame does not have pre-drilled holes, then it might be a little bit more work drilling holes and fishing out your wires, but you will be much more happier with the results. If your trailer is constructed of square tubing, I find that running your wires through the inside of the tubing makes for a much cleaner appearance and helps to protect the wiring as well. When wiring your trailer, be sure to route your wiring so that all wires are tucked in and away from anything that could rub or catch on them. Therefore the vehicle side should always be the female connector and your trailer/RV should be the male connector.įEMALE CONNECTOR_ MALE CONNECTOR So if you do not have a trailer or RV connected up to your vehicle, you wouldn't want live circuitry exposed which could touch metal objects and cause a short circuit. The reason for this is because your vehicles electrical circuit will be energized anytime the ignition is on.
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The connector with the three exposed poles or male connector is for the trailer side and the connector with the three female poles is for the vehicle side. The other male/female pole is the ground. You'll notice the connector on the right has three exposed or "male" post and the left connector has three "female" sockets. So for the most part, I believe you should be able to make good sense with the information I provide here and determine what best suits your particular situation to wire a trailer or connector.īelow are pictures of the basic or most commonly used 4-Wire connector. My objective here is to give you the most common scenario on how to wire a trailer, adding or changing a connector for your trailer or RV, or just simply repairing the wiring. While most manufacturers try to keep a standard, there are those who just have to be a little different. There are many variables involved to wire a trailer or RV.