* If you're looking for a switch to control a bed light: This light is usually wired directly to the tail lights, and often has a separate switch (in the cab or inline) or is simply activated by opening the tailgate. The location of such a switch would vary greatly depending on after-market installations. A factory installed bed light isn't common in that year.
* If you're referring to a switch for a power outlet in the bed: This also isn't standard and would be aftermarket. Its location would depend on where the installer placed it.
* If you're talking about something else related to cargo: You'll need to be more specific about what function you're trying to control.
To find any switches related to cargo, you need to:
1. Check the cab: Look around the dash, console, and door panels for any aftermarket switches that might control bed lighting or other cargo-related accessories.
2. Inspect the bed: Examine the wiring harness in the bed itself. There might be a switch or connection point mounted there.
3. Trace wires: If you have a wiring diagram for your specific Ranger model, trace the wiring for tail lights, power outlets or any other potentially relevant circuits. This can help you identify where any switches might be located.
Without knowing *exactly* what you're trying to control, pinpointing the location of a "cargo switch" is impossible.