1. Under the hood, in the Power Distribution Box (PDB): This is the most likely location. The PDB is usually a black plastic box located near the battery. The relay itself will be a small square or rectangular component, and may be labeled or you may need to consult your owner's manual or a wiring diagram to identify it.
2. Inside the passenger compartment, under the dash: This is less common but possible. Again, you'd need a wiring diagram to pinpoint it.
To find it reliably:
* Consult your owner's manual: This is the best first step. The manual should have a diagram showing the location of all relays and fuses.
* Use a wiring diagram: A wiring diagram specific to your 1998 Ford Ranger's engine and options is your next best bet. You can often find these online through Ford forums or automotive repair websites (like Haynes or Chilton manuals). Look for the diagram showing the fuel pump circuit.
* Visually inspect the PDB: Open the hood and carefully inspect the Power Distribution Box. Look for relays that are similar in size and appearance to other fuel-system related relays. Sometimes they might be labeled.
Important Note: Always disconnect the negative battery terminal before working on any electrical components to prevent accidental shorts or injury. If you're not comfortable working with electrical systems, it's best to take your truck to a qualified mechanic.
