1. Locate the License Plate Light Assembly:
* The license plate light assembly is located on the rear of the vehicle, above the license plate itself. It usually has a lens covering the bulb(s).
2. Access the Bulb:
* Twist and Pull Method (Most Common): This is the most likely scenario. You'll likely need to gently twist the lens or light assembly counter-clockwise (or sometimes clockwise; try both) to release it. Once loosened, it should pull away from the car body. Be gentle to avoid breaking any plastic clips.
* Screw-on Method (Less Common): Some models may use screws to hold the assembly in place. You'll need a small screwdriver (likely Phillips head) to remove the screws.
3. Replace the Bulb:
* Once you have access to the bulb socket, carefully remove the old bulb. It may simply pull straight out or twist slightly.
* Insert the new bulb, making sure it's seated correctly. The new bulb should be the same type as the old one (check the old bulb for wattage and type). Common types are 1157, 1141, or similar.
4. Reassemble:
* Carefully put the lens or light assembly back into place. If it's the twist and pull method, make sure it clicks back securely. If you used screws, re-tighten them.
Important Notes:
* Consult your owner's manual: This is the best resource for specific instructions for your 1999 Cadillac Eldorado. It will have diagrams and detailed steps.
* Bulb Type: Before heading to the auto parts store, check the old bulb to determine the correct replacement. This ensures proper fit and function.
* Safety First: Before working on the car, make sure it's parked safely and the ignition is off.
If you encounter difficulty, searching YouTube for "1999 Cadillac Eldorado license plate bulb replacement" might show a video demonstrating the process for your specific car model. If you're still having trouble after trying these steps, consider consulting a qualified mechanic.