Cadillac 1998 Eldorado Owner's Manual page 317

Rear Turn Signal Lamps and Taillamps
1. Open the trunk to gain access to the lamp housing.
2. Remove the convenience net and pull the trim away
to access the wing nuts.
3. Remove the two wing nuts.
4. Gently remove the lamp housing.
A
5 . Press the bulb housing lever and rotate the housing
to the left to remove it. To remove the bulb, push and
rotate it to the left.
Once you have replaced the burned-out bulb, reverse the
steps to reassemble the lamp assembly.
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