The fuse for the cigarette lighter in a 1991 Chevy S10 is typically located in the
underhood fuse box. However,
it's crucial to consult your owner's manual. The exact location and fuse rating will be specified there. The manual will have a diagram showing the fuse box layout.
Without the owner's manual, searching online for a 1991 Chevy S10 fuse box diagram might help, but the diagrams may vary slightly depending on trim level and options.
