In this way, you need to make connections with four brake assemblies on all wheels.Įach of them requires a pair of wires for 12V power using blue wire and white ground wire. In the case of tandem axle trailers, it is recommended to use electric brakes on both axles. To prevent later problems due to malfunctioning of ground wire, ensure to run it throughout the periphery of the trailer and connect the brakes with it instead of the metallic frame of the camper. Moreover, to ensure safe operation in broken wire with one side, both brakes must be connected in parallel combination.Įxtend a single wire up to the axle and splice it into two wires to connect with the one terminal of the coil of the electromagnet in the brakes.Ĭonnect its other side with the standard white ground wire for all purposes, including lights and brakes. You need to connect these on both wheels with the same blue-colored wire to ensure a unified braking operation of both wheels. Single axle trailers have less weight loading capacity, and electric brakes installed on them also vary accordingly. Electric brakes wiring for single axle trailer You will find the blue-colored wire connected with the brake controller power output on the vehicle side. Specific colored wire dedicated for the purpose is the blue one in both standards. Our particular concern is for wiring electric brakes on its side with a 7-pin plug. They use Red and Black interchangeably for 12V battery power. However, the SAE standard has a purple-colored wire instead of black. There are seven colored wires in a 7-pin connector both on the vehicle side and trailer side.Īccording to the RV standard, the colors included are white, brown, green, yellow, blue, red, and black. However, you can modify the wiring according to your requirements. How to Wire a 7 Pin Trailer Plug With Electric Brakes?Ī 7-pin connector is suitable for large trailers and RVs with more wiring options.Įach wire has specific color according to the standard for a particular function. What will be the effect of broken wire on trailer electric brakes?.How to protect wires connecting the electric brakes with a 7 Pin Trailer Plug?.Wire connection between parts of the trailer breakaway system.Connect wires with trailer breakaway system.Wiring for trailers with hydraulic brakes.Wire Connection in Tandem Axle Trailers.Electric brakes wiring for single axle trailer.How to Wire a 7 Pin Trailer Plug With Electric Brakes?.Just remember to always double check your connections and test them before hitting the road. With a little patience and some basic knowledge of trailer wiring, you’ll be hitting the open road in no time. If everything looks good, you should be all set! We hope this article has helped demystify the process of wiring a 5 pin trailer plug. To do this, you’ll need to use a voltage tester to ensure that there are no shorts or other issues with the wiring. Once you’ve connected all of the wires, it’s important to test the connections. Finally, the yellow and green wires should be connected to the corresponding left and right turn signal circuits. After the black wire is connected, the brown wire should be connected to the running light circuit of the trailer. This is the 12 volt wire and should be connected to the power source of the trailer. Once the white wire is connected, you can move on to the black wire. This is typically done with a self-tapping screw. Start by connecting the white wire to the ground of the trailer. Now that you understand the basics of 5 pin trailer plugs, let’s move on to connecting the wires. As far as the color coding of the wires, they will typically be as follows: white for ground, black for 12 volts, brown for running lights, yellow for left turn signals, and green for right turn signals. The flat plugs are usually used on smaller trailers and utility trailers, while the round plugs are used on larger trailers. There are two common types of plugs – flat and round. First things first, let’s start by taking a look at the different types of 5 pin trailer plugs. But don’t worry, we’re here to help! In this article, we’ll cover everything you need to know about wiring a 5 pin trailer plug, from understanding the different types of plugs and the color coding for each wire, to actually connecting the wires and testing the connection. It can be a frustrating and overwhelming experience, especially if you’re not familiar with wiring diagrams or the terminology associated with trailer wiring. We’ve all been there: you’re ready to hit the road with your trailer, but you can’t figure out how to get it properly wired.
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