1. Prepare: Turn off the car and let the lights cool down to avoid burns. You might want to have a clean rag handy.
2. Access the Taillight: You'll need to access the taillight assembly. This usually involves opening the trunk and removing some panels or screws. Consult your owner's manual for the precise instructions. It likely involves:
* Removing interior trim: There's usually a panel covering the taillight access. This often requires carefully prying it loose with a trim tool (avoiding excessive force to prevent damage). The panel may be held in by clips or screws.
* Removing access panel: Once the trim is removed, you'll find the access panel to the taillight assembly. This panel could also be held by clips or screws.
3. Disconnect the Bulb Socket: After accessing the bulb socket, carefully disconnect it. This usually involves gently twisting or squeezing the connector to release it from the bulb socket. Take note of how it's connected so you can reconnect it correctly later.
4. Remove the Bulb: The bulb itself is usually held in place by a simple twist. Gently turn the bulb counterclockwise (most are this way, but double-check) to remove it from the socket.
5. Install the New Bulb: Insert the new bulb, making sure it's properly seated. Turn it clockwise until it's securely locked in place.
6. Reconnect the Bulb Socket: Reconnect the bulb socket to its connector, ensuring a secure connection.
7. Reassemble: Carefully reassemble the access panel and interior trim, making sure everything clicks back into place.
8. Test: Turn on your hazard lights and check that both rear turn signals are working correctly.
Important Notes:
* Owner's Manual: The best and most accurate instructions will always be in your 1999 Buick Century owner's manual. Consult it for diagrams and specific procedures.
* Bulb Type: Before heading to the parts store, note the bulb type of your old bulb. This is usually printed on the bulb itself (e.g., 1157, 3157, etc.). Getting the correct replacement is crucial.
* Tools: You might need a small flat-head screwdriver or a trim removal tool to pry off the interior panels. Don't use anything too sharp that might scratch the plastic.
* Photos: If you're unsure about any step, take pictures before you disassemble anything to help you remember how to put it back together.
If you are uncomfortable performing this repair yourself, it's always best to take your vehicle to a qualified mechanic. They have the tools and expertise to avoid any accidental damage.
