For owners of the rugged 2020 Ford F350, customizing your truck to meet specific needs is a common goal. Whether you're adding auxiliary lights, a winch, or any other electrical accessory, understanding the 2020 F350 Upfitter Switch Wiring Diagram is your key to a clean and reliable installation. This diagram isn't just a piece of paper; it's a roadmap to power your aftermarket dreams safely and efficiently.
What is the 2020 F350 Upfitter Switch Wiring Diagram and How is it Used?
The 2020 F350 Upfitter Switch Wiring Diagram is a detailed schematic provided by Ford that illustrates the factory-installed upfitter switches located in the cab of your truck. These switches are designed to provide convenient access to various power sources within the vehicle, allowing you to easily control aftermarket accessories without needing to splice into crucial factory wiring harnesses. Think of them as pre-installed power outlets for your truck's custom needs. The importance of understanding this diagram cannot be overstated; it ensures your modifications are safe, compliant with vehicle electronics, and won't void your warranty.
The upfitter switches typically offer several distinct power outputs, each with specific characteristics:
- Continuous Power (12V constant): Available even when the ignition is off, ideal for memory-keeping devices or accessories that need to run continuously.
- Switched Power (12V ignition controlled): This power source is only active when the ignition is on, perfect for accessories you want to operate only when the truck is running, like auxiliary lighting.
- Ground Outputs: These provide a solid ground connection, essential for completing circuits for your accessories.
Using the 2020 F350 Upfitter Switch Wiring Diagram involves identifying the specific switch and its corresponding power output that best suits your accessory's requirements. For example, if you're installing a light bar that you only want to operate when the truck is on, you'd connect it to a switched power output. Conversely, a dashcam that needs to record even when parked might be connected to a continuous power source. The diagram will also show the location of the upfitter relays and fuses, which are critical for protecting your new electrical setup. Here's a simplified look at what you might find:
| Accessory Type | Recommended Power Source |
|---|---|
| Auxiliary Lights | Switched Power |
| Winch | Continuous Power (with appropriate fusing) |
| CB Radio | Switched Power |
To get the most accurate and detailed information tailored to your specific 2020 F350, we highly recommend referring to the official factory service manual for your vehicle. This manual will provide the definitive 2020 F350 Upfitter Switch Wiring Diagram and all the necessary technical specifications for a successful and safe installation of your aftermarket accessories.