Are you having trouble with your 1999 Ford Explorer’s trailer wiring? If so, you’ve come to the right place. This article will provide you with a comprehensive guide on how to troubleshoot and fix any issues with your vehicle’s trailer wiring.
Understanding Trailer Wiring
Before we dive into the specifics of the 1999 Ford Explorer’s trailer wiring, it’s important to understand the basics of trailer wiring.
Trailer wiring typically consists of four or seven wires, each of which has a specific function. The four-wire system includes wires for left turn/brake, right turn/brake, tail/marker lights, and ground. The seven-wire system includes all of the wires in the four-wire system, as well as wires for backup lights and electric brakes.
When troubleshooting trailer wiring, it’s important to have a wiring diagram specific to your vehicle. This will allow you to identify which wires go where and help you determine if there are any issues with the wiring.
1999 Ford Explorer Trailer Wiring Diagram
Here’s a detailed wiring diagram for the 1999 Ford Explorer:
| Wire Color | Function |
| Green | Right turn and brake lights |
| Yellow | Left turn and brake lights |
| Brown | Tail and marker lights |
| White | Ground |
| Blue | Electric brakes |
| Red | Backup lights |
Common Issues with Trailer Wiring
There are a number of common issues that can occur with trailer wiring. Here are some of the most common:
Blown Fuses
If you’re experiencing issues with your trailer’s lights, one of the first things to check is the fuses. Blown fuses can cause lights to stop working, so it’s important to check the fuses before doing anything else.
Loose Connections
Another common issue with trailer wiring is loose connections. If the wires aren’t connected securely, the trailer’s lights may not work properly. Make sure all connections are tight and secure before troubleshooting any other issues.
Corroded Wires
Over time, wires can become corroded, which can cause issues with trailer wiring. Check all wires for signs of corrosion and replace any that are corroded.
Faulty Ground
A faulty ground can also cause issues with trailer wiring. Make sure the ground wire is securely connected to the vehicle’s chassis and that the connection is clean and free of corrosion.
Broken Wires
Finally, broken wires can also cause issues with trailer wiring. Check all wires for signs of wear and tear and replace any wires that are broken or damaged.
FAQs
What kind of trailer wiring does the 1999 Ford Explorer have?
The 1999 Ford Explorer typically comes with a four-wire trailer wiring system, which includes wires for left turn/brake, right turn/brake, tail/marker lights, and ground.
How do I troubleshoot trailer wiring on my 1999 Ford Explorer?
To troubleshoot trailer wiring on your 1999 Ford Explorer, start by checking the fuses, making sure all connections are secure, checking for corroded wires, and ensuring that the ground wire is properly connected to the vehicle’s chassis. If none of these solutions work, you may need to replace the wiring harness.
Can I install trailer wiring on my 1999 Ford Explorer myself?
While it is possible to install trailer wiring on your 1999 Ford Explorer yourself, it’s recommended that you have it installed by a professional. This will ensure that the wiring is installed correctly and that there are no issues with the installation.
How often should I check my trailer wiring?
It’s a good idea to check your trailer wiring before every trip to ensure that everything is working properly. Additionally, you should have your wiring inspected by a professional at least once a year to ensure that it’s in good condition and working as it should.
