1. Turn off the ignition and remove the key from the ignition switch.
2. Open the hood of the vehicle and locate the fuse box.
3. Remove the fuse cover and locate fuse #20 (5A).
4. Remove fuse #20 and insert a new 5A fuse.
5. Close the fuse cover and reinstall the hood of the vehicle.
6. Turn on the ignition and verify that the clock light is now working properly.
If the clock light still does not work, there may be a problem with the clock itself or with the wiring harness. In this case, you will need to take your vehicle to a qualified mechanic for further diagnosis and repair.