When it comes to towing your trailer, having proper lighting is essential. The wiring diagram for trailer lights 7 pin is a commonly used wiring scheme for trailers that have more than one light. It is also known as the 7-way trailer plug wiring diagram. This article will provide a detailed guide on how to wire trailer lights using the 7-pin trailer plug.
The 7 Pin Trailer Plug Wiring Diagram
The 7 pin trailer plug wiring diagram consists of seven pins that are color-coded to help you identify each wire’s function. Each pin corresponds to a different function, and it’s important to understand what each one does to ensure that your trailer lights work correctly.
The following table summarizes the color coding for the pins in the 7 pin trailer plug:
| Pin | Wire Color | Function |
|---|---|---|
| 1 | White | Ground |
| 2 | Blue | Electric Brakes |
| 3 | Green | Tail/Running Lights |
| 4 | Red | Left Turn/Brake Lights |
| 5 | Brown | Right Turn/Brake Lights |
| 6 | Yellow | Auxiliary/Clearance Lights |
| 7 | Black | 12V Power |
Now that you know the color-coding for the pins let’s dive into the wiring process.
How to Wire Trailer Lights Using the 7 Pin Trailer Plug Wiring Diagram
Step 1: Gather the Necessary Tools
Before you start wiring your trailer lights, make sure that you have all the necessary tools, including a wire stripper, a crimping tool, electrical tape, and a 7-pin trailer plug.
Step 2: Clean and Prepare Wires
Remove any old wiring from your trailer and clean the wire connections to ensure a solid connection. Strip the ends of all wires to expose about 1/2 inch of bare wire.
Step 3: Connect the Ground Wire
Connect the white wire to the grounding pin, which is usually located at the base of the plug. The grounding pin should be larger than the other pins to ensure a secure connection.
Step 4: Connect the Electric Brake Wire (if applicable)
If you have electric brakes on your trailer, connect the blue wire to the electric brake pin located next to the grounding pin.
Step 5: Connect the Tail/Running Light Wire
Connect the green wire to the tail/running light pin located next to the electric brake pin.
Step 6: Connect the Left Turn/Brake Light Wire
Connect the red wire to the left turn/brake light pin located next to the tail/running light pin.
Step 7: Connect the Right Turn/Brake Light Wire
Connect the brown wire to the right turn/brake light pin located next to the left turn/brake light pin.
Step 8: Connect the Auxiliary/Clearance Light Wire
Connect the yellow wire to the auxiliary/clearance light pin located next to the right turn/brake light pin.
Step 9: Connect the 12V Power Wire
Connect the black wire to the 12V power pin located at the end of the plug.
FAQs
What if I wired my trailer lights incorrectly?
If you wired your trailer lights incorrectly, they may not work correctly, or they may not work at all. Check your wiring connections and make sure that you have connected each wire to the correct pin according to the wiring diagram.
What if my trailer lights keep burning out?
If your trailer lights keep burning out, it could be due to a wiring issue or a problem with your vehicle’s electrical system. Make sure that you have the correct wiring diagram for your trailer’s wiring configuration and that your vehicle’s electrical system is in good working condition.
What if I need to add additional lights to my trailer?
If you need to add additional lights to your trailer, you can do so by adding new wires and connecting them to the appropriate pins on the 7-pin trailer plug. Make sure that you have the correct wiring diagram for your specific trailer configuration and that you use the appropriate gauge wire for the job.
Conclusion
Wiring your trailer lights using the 7 pin trailer plug wiring diagram may seem daunting at first, but with the right tools and knowledge, it can be a straightforward process. Ensure that you have the correct wiring diagram for your trailer’s wiring configuration and follow the steps outlined above to ensure that your trailer lights work correctly.
