If you’re wondering how to convert a 7 pin trailer wiring harness to a 6 pin, you’re in the right place. This article will provide you with all the information you need to make the conversion safely and effectively. We’ll cover everything from what each wire in a 7 pin harness does, to which wires you’ll need to connect for a 6 pin setup. Let’s get started!
Understanding 7 Pin Trailer Wiring
Before we get into the details of converting your trailer wiring harness, it’s important to have a clear understanding of how a 7 pin harness works. A 7 pin connector is typically used on larger trailers, such as those used for caravanning, horse transportation, and heavy equipment. Here’s what each wire in a 7 pin harness does:
| Wire Color | Function |
|---|---|
| Black | Battery Charge |
| Blue | Electric Brakes |
| Brown | Taillights |
| Green | Right Turn/Brake |
| Orange | 12V Power |
| Purple | Reverse Lights |
| Yellow | Left Turn/Brake |
As you can see, a 7 pin connector has several wires that carry different signals. These signals include power, ground, brake signals, turn signals, and more. To convert a 7 pin wiring harness to a 6 pin, we’ll need to identify which wires we can do without.
Identifying the Wires to Use
To convert a 7 pin trailer wiring harness to a 6 pin, you’ll need to identify which wires you’ll need to connect. The basic function of a 6 pin harness is to provide power to the taillights, turn signals, and brake lights. Here are the wires you’ll need to use:
| Wire Color | Function |
|---|---|
| Brown | Taillights |
| Green | Right Turn/Brake |
| Yellow | Left Turn/Brake |
As you can see, you won’t need the black, blue, orange, or purple wires for a 6 pin setup. While you can leave these wires disconnected, it’s best to tape them up to avoid any confusion later on.
Wiring a 6 Pin Trailer Harness
Now that we’ve identified the wires we’ll be using, let’s take a look at how to wire a 6 pin trailer harness. Here’s what you’ll need:
- A wiring harness with a 6 pin connector
- A wiring diagram for your trailer
- Wire cutters and crimpers
- Electrical tape
Once you have your supplies, follow these steps:
- Start by removing the old 7 pin connector. Cut the wires close to the connector, leaving enough room to work with each wire.
- Strip about 1/2 inch of insulation from the end of each wire.
- Slide each wire into the appropriate terminal on the 6 pin connector. Use your wiring diagram to make sure you’re connecting the right wires.
- Crimp each wire securely in place.
- Wrap each wire with electrical tape to protect it from the elements.
FAQ
Can I use a 6 pin trailer harness on a 7 pin connector?
Yes, you can. However, you’ll need to make sure you have the right adapter to connect the two different connectors. You can purchase a 7 pin to 6 pin adapter at most automotive supply stores.
Do I need to worry about polarity when wiring a trailer harness?
Yes, you do. Make sure you’re connecting the positive wire to the positive terminal on the connector, and the negative wire to the negative terminal. This will prevent any electrical shorts or damage to your trailer’s electrical system.
Can I use any wire to connect my 6 pin trailer harness?
No, you can’t. It’s important to use wires of the appropriate gauge for your trailer. Using wires that are too thin can cause them to overheat and potentially start a fire. Check your wiring diagram to see what gauge wires you should be using for your specific trailer.
What if I don’t have a wiring diagram for my trailer?
You can usually find wiring diagrams for trailers online, either through the manufacturer’s website or through an online search. If you can’t find a diagram, you can use a circuit tester to identify each wire’s function.
Is it safe to wire my own trailer harness?
As long as you follow the appropriate safety precautions and use the right tools and materials, wiring your own trailer harness can be perfectly safe. However, if you’re not comfortable with electrical work, it’s always best to consult a professional.
Conclusion
Converting a 7 pin trailer harness to a 6 pin is a simple process that can save you time and money in the long run. By understanding the function of each wire and using the right tools and materials, you can make a safe and effective conversion that will provide you with years of trouble-free towing. Happy trails!
