1. Open the trunk of the car.
2. Locate the access panel for the rear light bulb. It is usually located on the inside of the trunk lid, near the rear of the car.
3. Remove the access panel by unscrewing the screws that hold it in place.
4. Locate the rear light bulb. It is usually a small, round bulb with a metal base.
5. Unscrew the rear light bulb by turning it counterclockwise.
6. Install the new rear light bulb by screwing it in clockwise.
7. Replace the access panel and secure it with the screws.
8. Close the trunk of the car.
Here are some additional tips for changing the rear light bulb in a 1989 New Yorker:
* Make sure that the car is parked in a safe location and that the engine is turned off.
* If you have difficulty reaching the access panel for the rear light bulb, you can use a flashlight to help you see.
* Be careful not to drop the rear light bulb. If it breaks, you will need to replace the entire assembly.
