* Under the hood in the fuse box: This is the most common location. The fuse box is usually located near the battery. Look for a diagram on the inside of the fuse box lid to identify the relay. The relay might be labeled, or you might need to consult a wiring diagram specific to your car's engine and options (like a shop manual).
* Inside the car, under the dashboard: This is less common but possible on some models.
To find it reliably:
1. Consult your owner's manual: This is the best place to start. It should have a diagram of the fuse box and relay locations.
2. Use a wiring diagram: A wiring diagram specific to your 1988 Buick Century (including the engine size) will definitively show you the relay's location and its connection to the fuel pump. These diagrams can often be found online (though their accuracy can vary) or purchased from auto parts stores.
3. Check online forums: Search online forums specific to Buick Century owners. Someone may have already asked and answered this question with pictures for your specific model. Be sure to specify the engine size (e.g., 2.5L, 3.8L) when searching.
Without knowing the precise engine and options of your 1988 Buick Century, a more specific answer is impossible. Using the owner's manual or a wiring diagram is crucial for accurate identification.
