What color is the reverse light wire on 7 way plug?
When working with a 7-way trailer plug, understanding the wiring is crucial for proper functionality and safety. One of the most common questions is about the reverse light wire—what color it is and how to identify it. In this article, we’ll break down the wiring of a 7-way plug and provide clear guidance on identifying the reverse light wire.
Understanding the 7-Way Plug Wiring
A 7-way plug is a standard connector used for towing trailers. It provides power to various trailer functions, including lights, brakes, and auxiliary systems. Each pin in the plug corresponds to a specific function, and the wires are color-coded for easy identification.
What Color is the Reverse Light Wire?
In a standard 7-way plug, the reverse light wire is typically purple. This wire is responsible for activating the reverse lights on the trailer when the towing vehicle is put into reverse gear. However, it’s important to note that wiring colors can vary depending on the manufacturer or if the wiring has been modified.
How to Confirm the Reverse Light Wire
To ensure you’re working with the correct wire, follow these steps:
- Consult the Wiring Diagram: Check the wiring diagram for your specific 7-way plug. This will confirm the color coding for each wire.
- Use a Multimeter: Set your multimeter to measure voltage. With the towing vehicle in reverse gear, test the wires to identify which one is carrying power. The reverse light wire will show voltage only when the vehicle is in reverse.
- Inspect the Trailer Connector: Look for labels or markings on the plug itself. Some connectors have diagrams or labels indicating the function of each pin.
Tips for Safe Wiring
When working with trailer wiring, keep these tips in mind:
- Double-Check Connections: Ensure all connections are secure and properly insulated to prevent short circuits.
- Use Heat-Shrink Tubing: Protect your connections from moisture and corrosion by using heat-shrink tubing or electrical tape.
- Test the System: After completing the wiring, test all trailer functions, including the reverse lights, to confirm everything is working correctly.
Conclusion
In most cases, the reverse light wire on a 7-way plug is purple, but it’s always a good idea to verify using a wiring diagram or multimeter. Properly identifying and connecting the reverse light wire ensures your trailer operates safely and efficiently. If you’re unsure or need assistance, don’t hesitate to reach out to a professional auto service like Kevin’s Autos for expert help!
Frequently Asked Questions
What color is reverse on trailer wiring?
blue wire
5-pin trailer wiring is very similar to 4-pin wiring, but it adds in a blue wire for the reverse or backup lights.
What is the colour of reverse light?
In the case of reversing lamps the colour of the light emitted inside the field of the light distribution grid defined at paragraph C 2. of Annex C shall be white.
What is the yellow wire on a 7 pin trailer plug?
The yellow wire is for the left turn signal and brake lights and activates the left turn signal and brake lights on the trailer. The brown wire is for running the taillights.
What happens if white and black wires are reversed in a light fixture?
Nothing. For one thing, a light, by which I assume you mean a floor lamp, desk lamp, or lighting fixture, is inherently a nonpolarized device. Since it is connected to AC, the polarity of the power reverses 50 or 60 times a second, so there can be no “polarity” of the light.
Which wire is reverse light on 7 pin trailer plug?
The reverse light pin on a traditional 7-way trailer connector, like part # PK11893 or a factory connector if that's what you have on your 2018 Ram, is the center pin. Take a look at the picture I attached that shows all the pin functions.
What are the wires on a 7 way plug?
A 7-way trailer connector has seven pins, each designated for specific functions:
- Pin 1: Ground (White wire)
- Pin 2: Electric Brakes (Blue wire)
- Pin 3: Tail/Running Lights (Brown wire)
- Pin 4: Left Turn/Brake Lights (Yellow wire)
- Pin 5: Right Turn/Brake Lights (Green wire)
- Pin 6: Backup Lights (Purple wire)
What color wire is the reverse light?
Ok, the black wire at the bulb wiring is the ground, the power when in reverse is either green/orange stripe or green/black stripe depending on which side of the car you're using.
Is there reverse in a 7 pin trailer plug?
Yes, the 7 way is wired to reverse. But, the relay has to be added. I had to install the Reverse and Charge relays to the auxiliary relay box under the hood.
Where does the yellow wire go on a 7 way plug?
But on our other harness over here our red wire is the left turn signal. And the yellow. Wire is the reverse light signal.
What color are each of the wires in a plug?
The plug has markings inside to identify each pin: (L) = Live = Brown. (N) = Neutral = Blue. (E) = Earth = Yellow & Green.
