Where is the 2019 ford f350 upfitter switch wire located?

The 2019 Ford F-350 uplfiter switch wires can be found against the firewall on the passenger's side of the engine bay. They have crimp terminals on the ends of them so You can attach accessories. The uplifter switches in Your truck can be used to add electronic accessories to Your vehicle. The most common use for them are for lights on the bumper or the roof. Before You attach accessories to the wires I recommend making sure that they are not damaged because that can cause the switches to fail. They can get damaged when they wind up sitting in the engine compartment for years.