* Inside the car's main fuse panel/junction box: This is the most likely alternative location. This box is often located under the dashboard, sometimes behind a panel requiring removal. Consult your owner's manual (if you have one) or a wiring diagram for the 1987 Toronado. The diagram will show the relay's location and possibly even its appearance.
* Behind the kick panel: Some cars place relays in the area behind the kick panels (the lower interior panels at the sides of the driver's and passenger's feet).
* Under the rear seat or in the trunk: Less common, but some components are placed there for reasons of space.
* In a secondary fuse box: Some models have a secondary fuse box, often under the hood but not integrated with the main one.
How to find it using a wiring diagram:
1. Obtain a wiring diagram: You can often find these online through repair manuals sites (like Haynes or Chilton) or specific Oldsmobile forums. A service manual will be the most helpful.
2. Locate the fuel pump circuit: The diagram will show the circuit for the fuel pump. Follow the wires from the pump to the relay.
3. Identify the relay: The diagram will likely show the relay's location using a symbol or a clear label.
Without a wiring diagram: This is significantly harder. You'll have to systematically check the areas listed above. Look for relays that might be the right size and shape (compared to other relays in the car), and carefully check the markings on them. Caution: Be careful not to touch anything electrical while doing this, especially if the engine is running.
In short: Your best bet is to find a wiring diagram specific to your 1987 Oldsmobile Toronado. This will give you the precise location of the fuel pump relay.
