2025 F350 Upfitter Switch Wiring Diagram. Access useful ford pro upfitter resources for your fleet vehicle products, including body builder layout books, guides, commercial vehicle manuals & more. The wiring diagram for the 2015 f350 upfitter switches consists of several key components and connections.
My 2016 f350 has the upfitter switches, i was able to pull the wires up enough from under the hood and behind the fuse box. These include the main power source, the upfitter switch junction box, the switch.