1. Open the owner's manual for your 1991 Chevy Caprice.
2. Look for the section titled "Fuses" or "Electrical" in the index or table of contents.
3. Turn to the page listed in the index or table of contents.
4. You should find the fuse diagram for your 1991 Chevy Caprice on this page.
If you do not have access to the owner's manual, you can also find the fuse diagram for your 1991 Chevy Caprice in the vehicle's fuse box. Here are some steps on how to find the fuse box:
1. Open the hood of your 1991 Chevy Caprice.
2. Look for a black plastic box labeled "Fuses" or "Electrical" in the engine compartment.
3. Open the fuse box.
4. You should find the fuse diagram for your 1991 Chevy Caprice on the inside cover of the fuse box.
If you still cannot find the fuse diagram, you can contact a local Chevrolet dealership. They should be able to provide you with the fuse diagram for your 1991 Chevy Caprice.