* Under the hood in relay boxes: This is the most common location. You'll likely find one or more fuse/relay boxes under the hood. Check near the battery and along the firewall. The boxes often have diagrams showing which relay controls what.
* Inside the car, often under the dashboard: Some relays, particularly those for interior accessories, might be located inside the car. Accessing these usually involves removing panels.
To find the specific relay you need, you'll need to know what circuit it controls. For example, if you're having trouble with your headlights, you'd need to find the headlight relay. Consult your owner's manual (if you have it) or a wiring diagram for your specific Lumina Euro model year. A wiring diagram will show you the relay's location and its circuit function. You can often find wiring diagrams online through sites specializing in automotive repair information (some require a subscription).
