However, common locations for relays in vehicles of that era include:
* Under the hood, in the fuse box: This is the most likely location. The fuse box might be near the battery or firewall.
* Under the dash: Less common for the fuel pump relay specifically but possible.
To find it, you should:
1. Consult your owner's manual: This is the best place to start. It should have a diagram showing the location of all relays and fuses.
2. Locate the fuse box: Examine both under the hood and under the dash. Look for a box with numerous fuses and relays.
3. Check the relay itself: Even without a diagram, relays are usually square or rectangular with multiple terminals and often have markings that might indicate their function. If you can identify a relay as possibly the fuel pump relay based on its size and markings, you could try replacing it to see if that fixes the issue. Note that this approach involves taking care to prevent short circuits.
4. Use a wiring diagram: If you can't find the information in your owner's manual or online, a wiring diagram specific to your 1979 Eldorado will show you exactly where the relay is located and how it's wired into the system. You can often find these diagrams online through Cadillac enthusiast forums or websites specializing in automotive repair manuals.
Remember to disconnect the negative battery terminal before working with electrical components to prevent accidental shorts or shocks.
