If you’re looking for a reliable and efficient way to power up accessories in your Ford F250, the upfitter switches are the way to go. With the 2018 F250, Ford has made it easier than ever to install and use these switches, and our wiring diagram will help you get the job done right. In this article, we’ll walk you through the process of wiring up your upfitter switches, including some essential FAQ that you may have.
What Are Upfitter Switches?
Upfitter switches are extra on/off switches that you can install on your Ford F250 to power up accessories such as LED lights, air compressors, and winches. These switches are installed by the factory and are located on the lower part of the dashboard, giving easy access to the driver to control the accessories. The upfitter switches are pre-wired and fused, making the job much easier for the installer.
How Many Upfitter Switches Are There on the 2018 F250?
The 2018 Ford F250 comes with six upfitter switches that are pre-installed from the factory. These switches can be used to power up to six different accessories. However, if you need more switches, aftermarket solutions are available to expand your switch panel.
What’s Included in the Upfitter Package?
The upfitter switches come as part of the upfitter package that can be added to your Ford F250. This package includes the switches, wiring harness, relays, and fuses. The package also includes a manual that provides detailed instructions on how to install and configure the switches. The upfitter package can be added as an option when purchasing a new F250 from the dealer.
Wiring Diagram for Upfitter Switches on the 2018 F250
Now that you have a basic understanding of what upfitter switches are and how they work, let’s take a closer look at the wiring diagram for the 2018 Ford F250. Before we begin, it’s essential to note that the wiring for the upfitter switches is color-coded, making it easier to identify the correct wires. The colors used for the wiring are as follows:
| Wire Color | Function |
|---|---|
| Purple | Switched 12V |
| Yellow/Blue | Ground |
| Orange/Black | Switch Signal |
Step-by-Step Wiring Instructions for Upfitter Switches
Step 1: Prepare the Wiring Harness
The first step is to prepare the wiring harness that came with the upfitter package. The harness includes six connectors that have already been connected to the switches. Using wire strippers, strip about 1/4 inch of insulation from the end of each wire on the harness.
Step 2: Locate the Auxiliary Fuse Box
The next step is to locate the auxiliary fuse box, which is located underneath the hood on the passenger side of the vehicle. Open the fuse box lid and locate the auxiliary relay box underneath. Remove the cover of the relay box.
Step 3: Connect the Wiring Harness to the Auxiliary Relay Box
The third step is to connect the wiring harness to the auxiliary relay box. The harness should have six connectors, and the relay box should have six corresponding terminals labeled 1 through 6. Connect the purple wire from the harness to terminal 87a on terminal 7. Connect the yellow/blue wire to terminal 85 on relay 7. Connect the orange/black wire to terminal 86 on relay 7. Finally, connect the yellow/blue wire to terminal 30 on relay 7.
Step 4: Connect the Fuse Tap to the Battery
The next step is to connect the fuse tap from the upfitter package to the battery. Locate the fuse box under the hood on the driver side of the vehicle. Use pliers to remove the fuse labeled “F33” from the fuse box. Insert the fuse tap into the slot where the fuse was removed. Use a 10mm socket to loosen and remove the positive battery terminal. Connect the red wire from the fuse tap to the positive battery terminal, and then tighten the nut.
Step 5: Connect the Ground Wire
The final step is to connect the ground wire from the harness. Connect the yellow/blue wire to a good ground point under the hood. A suitable ground point is the bolt of the fender.
FAQs
Can I Add More Than Six Upfitter Switches to My F250?
Yes, aftermarket solutions are available to expand your switch panel. You can add another switch panel that can accommodate up to six more switches. These panels are designed to work seamlessly with the factory wiring and relays, making the installation process quick and easy.
Can I Use the Upfitter Switches to Power Anything?
No, the upfitter switches are designed to power specific accessories such as LED lights, winches, and air compressors. It’s essential to ensure that the accessory you want to power is compatible with the upfitter switch system. Consult the manual that came with the upfitter package or contact a Ford dealer for guidance.
Do I Need Any Special Tools to Install the Upfitter Switches?
No, the installation process is straightforward and requires only basic tools such as pliers, wire strippers, and a socket wrench. The upfitter package comes with all the necessary components to complete the installation.
Is It Possible to Install Upfitter Switches on an Older F250?
Yes, you can install upfitter switches on older F250 models, but the process may vary depending on the year of the vehicle. It’s essential to consult the manual that came with the upfitter package or contact a Ford dealer for guidance.
Are There Any Safety Precautions I Should Take When Installing the Upfitter Switches?
Yes, it’s essential to disconnect the negative battery terminal before performing any work on the electrical system. This will prevent accidental short circuits and electrocution. Always follow the instructions provided in the manual and wear protective gear such as gloves and safety glasses.
