Trailer wiring can be a challenging task, especially for those who lack technical skills. However, with a little guidance and effort, it can be accomplished successfully. In this article, we will outline a comprehensive guide on how to wire an 8 pin trailer plug in the UK. We will provide you with the necessary information required to ensure that you get it right the first time.
What is an 8 Pin Trailer Plug?
An 8 pin trailer plug is a type of connector that is commonly used in the UK. It is used to connect the electrical wiring of a trailer to that of a towing vehicle. The 8 pin trailer plug features eight pins that correspond to different electrical connections. Each pin is color-coded and has its own unique function.
What are the Different Pins in an 8 Pin Trailer Plug?
The eight pins in an 8 pin trailer plug are as follows:
| Pin Number | Color | Function |
|---|---|---|
| 1 | Yellow | Left Indicator |
| 2 | Blue | Fog Light |
| 3 | White | Earth Return |
| 4 | Green | Right Indicator |
| 5 | Brown | Right Tail Light |
| 6 | Red | Brake Lights |
| 7 | Black | Battery Charge |
| 8 | Grey | Left Tail Light |
How to Wire an 8 Pin Trailer Plug in the UK?
Wiring an 8 pin trailer plug requires some technical know-how. Here is a step-by-step guide to help you get it right.
Gather the Necessary Tools and Supplies
To wire an 8 pin trailer plug, you will need a few tools and supplies. These include:
- A wire stripper
- A pair of pliers
- An 8 pin trailer plug
- An electrical tester
- A roll of electrical tape
Connect the Wires to the Pins
The first step in wiring an 8 pin trailer plug is to connect the wires to the appropriate pins. Here is how to do it:
- Strip the insulation off the ends of the wires.
- Connect the yellow wire to pin 1.
- Connect the blue wire to pin 2.
- Connect the white wire to pin 3.
- Connect the green wire to pin 4.
- Connect the brown wire to pin 5.
- Connect the red wire to pin 6.
- Connect the black wire to pin 7.
- Connect the grey wire to pin 8.
Test the Connections
After connecting the wires to the pins, you need to test the connections to ensure that they are working correctly. Here is how to do it:
- Use an electrical tester to check the yellow wire for voltage. It should show 12 volts when the left indicator is on.
- Use the tester to check the blue wire for voltage. It should show 12 volts when the fog lights are on.
- Check the white wire for continuity. It should show continuity with the earth return of the towing vehicle.
- Test the green wire for voltage. It should show 12 volts when the right indicator is on.
- Check the brown wire for voltage. It should show 12 volts when the right tail light is on.
- Test the red wire for voltage. It should show 12 volts when the brakes are applied.
- Use the tester to check the black wire for voltage. It should show 12 volts when the battery is charging.
- Check the grey wire for voltage. It should show 12 volts when the left tail light is on.
Secure the Connections with Electrical Tape
After testing the connections, you need to secure them with electrical tape. Here is how to do it:
- Wrap each wire with electrical tape to prevent it from coming loose.
- Tape the wires together neatly to keep them organized.
- Wrap the entire connection with electrical tape to give it some extra protection.
FAQ
What is the Purpose of an 8 Pin Trailer Plug?
The purpose of an 8 pin trailer plug is to connect the electrical wiring of a towing vehicle to that of a trailer. It enables the towing vehicle to power the trailer’s lights, brakes, and other electrical components.
What are the Different Pins in an 8 Pin Trailer Plug?
The eight pins in an 8 pin trailer plug are as follows:
| Pin Number | Color | Function |
|---|---|---|
| 1 | Yellow | Left Indicator |
| 2 | Blue | Fog Light |
| 3 | White | Earth Return |
| 4 | Green | Right Indicator |
| 5 | Brown | Right Tail Light |
| 6 | Red | Brake Lights |
| 7 | Black | Battery Charge |
| 8 | Grey | Left Tail Light |
What Tools and Supplies are Required to Wire an 8 Pin Trailer Plug?
The tools and supplies required to wire an 8 pin trailer plug include a wire stripper, a pair of pliers, an 8 pin trailer plug, an electrical tester, and a roll of electrical tape.
How Do I Test the Connections After Wiring an 8 Pin Trailer Plug?
To test the connections after wiring an 8 pin trailer plug, use an electrical tester to check each wire for voltage or continuity. The tester should show 12 volts when the corresponding function is in use.
How Do I Secure the Connections After Wiring an 8 Pin Trailer Plug?
To secure the connections after wiring an 8 pin trailer plug, wrap each wire with electrical tape to prevent it from coming loose. Tape the wires together neatly to keep them organized, and wrap the entire connection with electrical tape to give it some extra protection.
