* Under the hood in the fuse box: This is the most common location. The fuse box is usually located near the battery. The relay itself might be labeled, or you might need to consult your owner's manual or a wiring diagram to identify it. Look for a relay that's related to the fuel system or fuel pump specifically.
* Under the dash fuse block (less common): Some 1991 S10s might have the fuel pump relay in the fuse block under the dashboard. Again, your owner's manual is your best bet here for precise identification.
To find it:
1. Consult your owner's manual: This is the best place to start. It will show you a diagram of the fuse box and relay locations.
2. Look for a diagram on the fuse box cover: Often, there is a diagram printed on the inside of the fuse box cover.
3. Use a wiring diagram: If you can't find it in the manual or on the cover, a wiring diagram specific to your 1991 S10's engine and trim will definitively show you the relay location and its markings. You can find these online through various automotive repair websites or forums.
Remember to always disconnect the negative battery terminal before working with electrical components to prevent short circuits or accidental injury.
