Trailer Wiring Diagram Colors

By | November 4, 2022



If you’re towing a trailer, it’s important that you have the proper wiring connections in place. After all, not only will the wrong kind of hookup leave your trailer without electricity – it can also be dangerous. Knowing how to correctly identify the color coding used in trailer wiring diagrams is key to successful hookups.

When looking at a trailer wiring diagram, you’ll notice there are six different colors used to denote different functions. White wires are the “ground” connection and should always be connected. Green and brown wires are for the running lights, red is the turn signal and brake light, black is the reverse light, yellow is for the left turn signal and stoplight, and blue is for the electric brakes. Keeping track of all these wires can be a daunting task but with a trailer wiring diagram it becomes much simpler.

Identifying the appropriate wiring is only part of the battle. Knowing how to properly connect the wires is another important factor in making sure your trailer is wired correctly and safely. The general rule of thumb is that the positive wires should be connected together and the negative wires should be connected together. If the wires are wired incorrectly it could lead to shorts, power loss, and even a potential fire hazard. Make sure you hire a qualified technician if you’re unsure how to make the connections.

Knowing the wiring diagram colors and how to make the connections is essential for anyone who tows a trailer. Having the right connections can help ensure that your trailer has the power it needs – and provides you with peace of mind. Keep your trailer safe and make sure you use the correct wiring connections.


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