Your best bet is to consult your owner's manual. It will have a diagram showing the location of all fuses and relays, clearly identifying the fuel pump fuse (it's often labeled as "Fuel Pump" or something similar).
If you don't have the manual, you can often find a free PDF version online by searching "[Year] [Make] [Model] owner's manual."
Without your owner's manual, searching online for a 1993 S10 fuse box diagram might provide some clues, but they won't be definitively accurate for *your* specific truck since there were variations. Looking at diagrams for similar years might help though. Always visually check the fuse labels against your actual fuse boxes.
