Trailer running lights are an essential component of any trailer, as they provide illumination for the trailer when it’s being towed at night. Proper wiring of the running lights is crucial to ensure that they function smoothly and without any issues. In this article, we will guide you through the process of wiring trailer running lights, step by step.
What are trailer running lights?
Trailer running lights are the lights that are mounted on the front, sides, and rear of a trailer. They are used to provide illumination to the trailer when it is being towed at night. Running lights include tail lights, clearance lights, and side marker lights. These lights are usually powered by the tow vehicle’s electrical system.
Tail Lights
Tail lights are the main lights on the rear of the trailer. They are mounted on the left and right sides of the trailer and are used to indicate when the trailer is stopping or turning.
The tail lights should be wired so that they are connected to the vehicle’s brake lights. When the tow vehicle’s brakes are applied, the trailer’s tail lights should also light up. This is important for safety reasons, as it helps to alert other drivers that the vehicle is slowing down or stopping.
Clearance Lights
Clearance lights are the lights that are mounted on the sides of the trailer. They are used to indicate the width of the trailer and to help other drivers see the trailer at night. Clearance lights should be wired so that they are always on when the vehicle is in use.
Side Marker Lights
Side marker lights are the lights that are mounted on the front and back sides of the trailer. They are used to indicate the length of the trailer and to help other drivers see the trailer at night. Side marker lights should be wired so that they are always on when the vehicle is in use.
Wiring the trailer running lights
Step 1: Gather the necessary materials
The first step in wiring your trailer running lights is to gather all the necessary materials. You will need wire strippers, wire connectors, electrical tape, and a wiring diagram for your specific trailer. This will help you to determine the appropriate wires to connect to each light.
Step 2: Locate the wiring harness
The next step is to locate the wiring harness on your vehicle that connects to the trailer. This is usually located near the rear bumper of the vehicle. You may need to remove the tail light cover to access the wiring harness.
Step 3: Determine the appropriate wires
You will need to determine which wires on the wiring harness correspond to the running lights on your trailer. This can be done by consulting the wiring diagram for your specific trailer.
Step 4: Connect the wires
Once you have determined the appropriate wires, you can begin connecting them. Use wire connectors to join the wires together, making sure that they are secure and not exposed. You can also use electrical tape to further secure the connections.
Step 5: Test the lights
After you have connected all the wires, it’s important to test the lights. This will ensure that they are working properly and that there are no issues with the wiring. If you notice any problems, you may need to go back and check your connections.
FAQ
Q: What is the purpose of trailer running lights?
A: The purpose of trailer running lights is to provide illumination for the trailer when it’s being towed at night. This is important for safety reasons, as it helps to make the trailer more visible to other drivers on the road.
Q: Can I wire my trailer running lights to my vehicle’s battery?
A: No, it’s not recommended to wire your trailer running lights to your vehicle’s battery. This can cause electrical issues and may drain your vehicle’s battery over time. It’s best to wire the running lights to the vehicle’s electrical system instead.
Q: What type of wire should I use to wire my trailer running lights?
A: It’s important to use the appropriate type of wire when wiring your trailer running lights. You should use a wire that is rated for outdoor use and that is able to handle the electrical load of the lights. Consult your wiring diagram or a professional for guidance on the appropriate wire to use.
Q: What should I do if my trailer running lights are not working?
A: If your trailer running lights are not working, there may be an issue with the wiring. Check your connections and your wiring diagram to ensure that everything is properly connected. If you can’t identify the problem, it may be best to seek the assistance of a professional.
Q: Can I install trailer running lights myself?
A: Yes, you can install trailer running lights yourself if you have the necessary tools and knowledge. However, if you are not comfortable working with electrical systems or if you are unsure of the process, it may be best to seek the assistance of a professional.
| Wire Color | Function |
|---|---|
| Brown | Tail lights |
| Yellow | Left turn signal |
| Green | Right turn signal |
| White | Ground wire |
Conclusion
Wiring your trailer running lights may seem like a daunting task, but it’s actually a relatively simple process. With the right tools and knowledge, you can ensure that your running lights are properly wired and functioning smoothly. Remember to consult your wiring diagram and test your lights to ensure that everything is working properly. If you encounter any issues, seek the assistance of a professional to avoid any potential safety hazards.
