* Under the hood in the Power Distribution Box (PDB): This is the most common location. The PDB is usually a large black box located near the battery. You'll need to consult your owner's manual or a wiring diagram to identify the specific relay. The relay itself might be labeled, or you may need to trace wires to confirm.
* Inside the passenger compartment fuse box: Less common, but possible. This fuse box is usually located under the dashboard on the passenger side. Again, your owner's manual or a wiring diagram is essential for proper identification.
To find it:
1. Consult your owner's manual: This is the best starting point. The manual will show the location of the fuse and relay boxes and may have a diagram showing the fuel pump relay.
2. Use a wiring diagram: A wiring diagram specific to your 1994 Ford Explorer will definitively show the relay's location and its connections. You can find these diagrams online (often for a fee) or at auto parts stores.
3. Look for labeling: Once you've located the fuse/relay boxes, carefully inspect the relays. Some may be clearly labeled "Fuel Pump."
4. Check online forums: Searching online forums dedicated to Ford Explorers (like Explorerforum.com) can yield helpful information from other owners who have dealt with similar issues.
Important Note: Always disconnect the negative battery terminal before working with electrical components to prevent accidental short circuits or injury.