* Under the hood, in the fuse box: This is the most common location for this era. The fuse box itself might be located near the battery or on the passenger side fender. Look for a relay that's labeled "Fuel Pump" or has a diagram that indicates its function. You might need to open the fuse box cover to see the relays clearly.
* Under the dashboard: While less likely for the fuel pump relay specifically, some relays are grouped under the dash on this model year.
To find it definitively:
1. Consult your owner's manual: This is the best place to start. The manual should have a diagram of the fuse and relay box(es) showing the location of each component.
2. Use a wiring diagram: A wiring diagram specific to your 1983 Crown Victoria 5.0L with TBI will show the relay's location and its connection to the fuel pump circuit. You can often find these diagrams online through forums dedicated to classic Ford vehicles or via automotive repair manual sites (like Chilton or Haynes).
3. Trace the fuel pump wire: Start at the fuel pump itself (located in the fuel tank) and trace the wire back towards the front of the car. This wire will eventually lead to the relay.
Remember to be cautious when working around electrical components and disconnect the negative battery terminal before doing any work in the fuse and relay boxes. The relay itself is usually a small square or rectangular component that can be easily pulled out and replaced if necessary.
