2000 lesabre turn signal

From the owners manual:

Rear Turn Signals, Stoplamps and Taillamps

1. Open the trunk. Turn the screws located just inside of the trunk counterclockwise and remove.
2. Remove the plastic trim piece from the trunk.
3. Pull the carpet away from the rear area to access the turn signal bulb assembly.
4. Using a 10 mm wrench or a socket, loosen and remove the bolts that hold the assembly in place.
5. Pull out the bulb assembly.
6. Turn the bulb socket one-quarter turn counterclockwise, while pressing it firmly.
7. Pull the bulb socket straight out of the assembly.
8. Remove the old bulb by pulling it straight out.
9. Replace with a new bulb by pushing the bulb straight into the socket until the bulb clicks into place.
10. Turn the bulb socket one-quarter turn into the assembly to lock it back into place.
11. Reverse steps 1 through 5 to reinstall the bulb assembly.

Best of luck

The Brake light & turnsignal bulb are the same bulb. There is only one bulb in each corner housing.

Harryface