When it comes to towing a trailer, having a proper wiring connection between your RV and the trailer is crucial. One of the most common wiring systems used for RVs is the 7 wire RV plug. In this article, we will discuss the wiring diagram for a 7 wire RV plug in detail.
What is a 7 Wire RV Plug?
A 7 wire RV plug is a type of electrical connector used to connect a trailer to an RV or a towing vehicle. It comes with seven pins, each of which is designed to carry a specific signal or power to operate different trailer functions, such as lighting, brakes, and auxiliary power.
What are the Different Colors of the Wires in a 7 Wire RV Plug?
The seven wires in a 7 wire RV plug are color-coded for easy identification. Here is a breakdown of the wire colors:
| Wire Color | Signal/Power |
|---|---|
| Black | Battery charge |
| White | Ground |
| Blue | Electric brakes |
| Green | Tail, license, and clearance lights |
| Yellow | Left turn/brake lights |
| Red | Stop/brake lights |
| Brown | Right turn/brake lights |
Now that we know the wire colors, let’s move on to the wiring diagram.
Wiring Diagram for a 7 Wire RV Plug
The wiring diagram for a 7 wire RV plug consists of seven individual circuits, each with its own function. Here is the wiring diagram:
How to Connect the Wires to a 7 Wire RV Plug?
Before connecting the wires to a 7 wire RV plug, it is important to make sure that the wires are properly stripped and crimped with the appropriate connectors. Here are the steps to connect the wires:
- Connect the black wire to the top center pin of the plug.
- Connect the white wire to the bottom center pin of the plug.
- Connect the blue wire to the left top pin of the plug.
- Connect the green wire to the left bottom pin of the plug.
- Connect the yellow wire to the right top pin of the plug.
- Connect the red wire to the right bottom pin of the plug.
- Connect the brown wire to the center right pin of the plug.
FAQs
1. Can I Use a 7 Wire RV Plug with a 4 Wire Trailer?
No, you cannot use a 7 wire RV plug with a 4 wire trailer as the wiring system is not compatible. You will need to use a 4 wire RV plug instead.
2. What Happens If I Connect the Wires Incorrectly?
If you connect the wires incorrectly, it can cause damage to your RV, trailer, or both. It can also cause safety hazards such as malfunctioning brakes or lighting, which can lead to accidents.
3. Do I Need to Ground My Trailer?
Yes, you need to ground your trailer to ensure proper electrical connection and prevent electrical hazards. The white wire in the 7 wire RV plug is dedicated to grounding the trailer.
4. Can I Install a 7 Wire RV Plug Myself?
Yes, you can install a 7 wire RV plug yourself if you have a good understanding of electrical wiring and the right tools. However, if you are not confident in your abilities, it is best to seek professional help.
5. How Can I Test My 7 Wire RV Plug?
You can test your 7 wire RV plug using a multimeter or a circuit
