- #4 PIN TRAILER WIRING DIAGRAM INSTALL#
- #4 PIN TRAILER WIRING DIAGRAM DRIVERS#
2) The brown color means tail lights or possible side markers. In the case of the 5-core connector, the 5 individual trailer wire colors signify different things. 5 Core Trailer Wire Colors & MeaningĮach connector has a number of wires that you need to connect individually. #4 PIN TRAILER WIRING DIAGRAM DRIVERS#
While the connector is identical to the 4-pin connector, the 5-pin connector has another blue wire which gives drivers the power to operate breaks.
#4 PIN TRAILER WIRING DIAGRAM INSTALL#
To install breaks, you’ll need to get a connector wire that has at least 5 pins (meaning 5 different trailer wire colors). If your trailer exceeds a certain weight, it’s time to install a brake system.
5-core trailer wires are essentially used to add breaks to traditional small trailers. While this regulation does not apply in all states, it’s still a good idea to install breaks on the trailer. Trailers over this weight limit need to have breaks, and that’s why you need the extra connectors of the 5-core wire. The 5-core trailer wire is popular on heavier and bulkier trailers that exceeded 3000 lbs in weight. 4) The green color means a right turn signal or light. 3) The yellow color implies a left turn signal light. 2) The brown color indicates tail lights or possible side markers. 
1) The white color signifies the ground. In the case of the 4 wire trailer wire, the 4 individual colors signify different things. 4 Core Trailer Wire Colors & MeaningĮach connector has a number of wires that you need to connect individually. These 4-pin connectors are not very common on large trailers but they’re mainly used on smaller stationary trailers that are lightweight and don’t have break systems. In terms of connector types, the “Flat” 4-pin connector is the most common 4-pin shape you’ll find on trailers (there are also round connectors). 4-core connectors are also the “easiest” to install compared to other pin connectors. The 4-pin connector is popular with all smaller forms of trailers, such as camper trailers, tiny boat trailers, utility trailers and similar. The 4-pin connector is the minimal connector you’ll find on mid-sized and small trailers. These lights can all be connected using a basic 4 core wires connector. To make a trailer light work, you need 4 main LED lights: left signals, right signals, taillights, and brake lights. 
This connector is the easiest to install because you only have 4 functions. The 4-core connector is the most basic connector you’ll find on all trailers. Trailer Wires: 4 Core Trailer Wire Installation If you want to get a broad overview of how each connector works, follow the guidelines laid out below. These are universal wiring standards that will work on virtually all trailers however, you’ll still have to follow the diagrams provided by your supplier.
In this guide, you’ll find the basic knowledge you need to wire your trailer and understand what you’re looking at when you use diagrams provided by your wire supplier. We should note that there are no ideal wiring systems for trailers and that all standards and wiring systems serve their own purpose. The basics include connecting 4-pin, 5-pin, and 7-pin connectors and knowing what each trailer wire colors mean. That is why this guide will serve you when you need a reminder of the basics. It’s easy to look at diagrams, but if you don’t know what you’re looking at you won’t get far. Introduction To Trailer Wire Color Systems
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