Steps:
1. Prepare: Open the trunk of your Cadillac. You'll likely need a Phillips head screwdriver.
2. Locate the Access Panel: The high-mount brake light is usually accessed through a panel inside the trunk. This panel is often located in the rear deck panel, possibly near the rear window or between the rear seat backrests (if you have a folding rear seat). It might be covered with fabric, carpet, or plastic trim. Look carefully for screws or clips securing the panel.
3. Remove the Access Panel: Carefully remove the screws or pry open the clips holding the access panel in place. Work gently to avoid breaking any plastic clips.
4. Access the Brake Light: Once the access panel is removed, you should see the brake light assembly. It might be held in place with more screws or clips.
5. Disconnect the Electrical Connector: Before removing the light assembly, disconnect the electrical connector. This is usually a simple plug-in connection that you can carefully unplug.
6. Remove the Brake Light Assembly: Carefully remove the screws or clips holding the brake light assembly in place.
7. Replace the Bulb: Once the assembly is removed, you'll see the bulb. Carefully remove the old bulb and replace it with a new one of the correct type and wattage (check your owner's manual for specifications). Handle the new bulb gently to avoid breaking the glass or damaging the filament.
8. Reassemble: Put the brake light assembly back in place and secure it with the screws or clips. Reconnect the electrical connector.
9. Replace the Access Panel: Put the access panel back in place and secure it with the screws or clips.
10. Test: Close the trunk and test the brake light to make sure it works.
Important Considerations:
* Care with Clips: Plastic clips are fragile. If you're not sure how to remove them without breaking them, consider seeking professional help or watching a YouTube video specific to your 1989 Cadillac Brougham.
* Bulb Type: Ensure you buy the correct type and wattage bulb. Incorrect bulbs can cause overheating and damage. Your owner's manual or a parts store can tell you the correct specification.
* Safety: If you are uncomfortable working on your car yourself, it's always best to take it to a qualified mechanic.
Remember, this is a general guide. Variations exist between models. Referencing a repair manual specific to your 1989 Cadillac Brougham is highly recommended. Online forums dedicated to Cadillac Broughams may also provide helpful tips and pictures from owners who have performed this repair.
