If you are a truck owner, you understand the importance of upfitting your vehicle to make it work better for your needs. One important aspect of this process is wiring up the upfitter switches in your 2021 F350. In this article, we will go through the steps and provide a wiring diagram to make the process easier for you.
What are upfitter switches?
Upfitter switches are extra buttons that are installed in your truck to allow you to control aftermarket accessories, such as lights, winches, and compressors. These switches are pre-wired and are typically located on the center dashboard of your truck.
For the 2021 F350, there are up to six upfitter switches that can be installed. These switches are ready to be used with many different types of accessories, as long as they meet the electrical requirements of your truck.
Wiring diagram for upfitter switches in the 2021 F350
Before you start wiring up your upfitter switches, it’s important to have a wiring diagram to guide you through the process. The following diagram shows the correct wiring for each switch on the 2021 F350.
| Switch Number | Wire Color | Circuit Function | Accessory |
|---|---|---|---|
| 1 | White/Orange | Battery Feed | N/A |
| 2 | White/Brown | Ignition Switched Battery Feed | N/A |
| 3 | White/Pink | Battery Feed | N/A |
| 4 | White/Violet | Battery Feed | N/A |
| 5 | White/Gray | Battery Feed | N/A |
| 6 | White/Green | Battery Feed | N/A |
Switch Number 1
The first switch is the battery feed switch. This switch is always hot and connected directly to the battery. It is used to power accessories that need constant power, even when the vehicle is turned off.
Examples of accessories that might be connected to this switch include air compressors, winches, or refrigerators.
When wiring this switch, make sure to use a properly sized wire and fuse to prevent any electrical problems or damage to your vehicle.
Switch Number 2
The second switch is the ignition switch battery feed switch. This switch is connected to the ignition and is only active when the key is in the “on” or “run” position.
This switch is ideal for accessories that only need power when the vehicle is in use, such as radios or GPS units.
Switch Numbers 3, 4, 5, and 6
The last four switches are also battery feed switches, meaning they are always hot and connected directly to the battery. They can be used for any accessory that needs uninterrupted power, such as lights or buzzers.
When wiring up these switches, make sure to use the correct size wire and fuse to avoid any electrical problems.
FAQs
1. How many upfitter switches are available on the 2021 F350?
The 2021 F350 has up to six upfitter switches that can be installed.
2. Can I use any accessory with the upfitter switches?
No, you need to ensure that the accessory you want to connect to the upfitter switches meets the electrical requirements of your truck.
3. How do I know which wire to connect to each switch?
Refer to the wiring diagram provided in this article for guidance. Each switch has a specific wire color and function that should be followed.
4. What size wire and fuse should I use when wiring up the upfitter switches?
Make sure to use a wire and fuse that is appropriately sized for the accessory you are connecting to the switch. Refer to the manufacturer’s specifications or consult a professional if you are not sure.
5. Can I install the upfitter switches myself?
Yes, you can install the upfitter switches yourself if you have the necessary knowledge and tools. However, if you are unsure, it’s best to consult a professional to avoid any electrical problems or damage to your vehicle.
