To find it, you'll need to:
1. Locate the underhood fuse box: This is usually near the battery, often on the driver's side fender well.
2. Consult your owner's manual: The diagram in your owner's manual will show the fuse box layout and may identify the relay responsible for the fuel pump's operation. Even if it doesn't directly name a "fuel pump relay," it may show a relay in the circuit.
3. Use a wiring diagram: A wiring diagram specific to your 1988 Honda Accord will be the most accurate way to identify the relay. You can often find these online through Honda forums or repair manuals.
Important Note: Since there isn't a clearly labeled fuel pump relay, testing the system requires a multimeter and understanding of basic electrical troubleshooting, or professional assistance from a mechanic. Simply swapping relays based on assumptions could lead to further problems.