Generally when an icemaker is dripping water it is because hard water deposits have formed and are causing the water to run over the side when the icemaker fills.
To see where the water is coming from you should turn the icemaker off for 3-4 hours. Open the freezer door and hold the plunger on the light switch in as you watch the icemaker.
The icemaker should go through the harvest cycle and you can watch to see where the water comes from. Usually the leak will occur when the icemaker fills with water. If the water runs over the side when the icemaker fills, the icemaker needs cleaning.
To clean the icemaker you will have to remove it from the freezer. Turn the refrigerator off and remove the ice bucket from the freezer.
Remove the 2 screws above the ice mold that mount the icemaker to the back of the freezer. Gently pull the icemaker to the left and away from the rear wall. Disconnect the wiring connector and you can remove the icemaker.
Place the icemaker in a pan or sink of water with 1 cup of vinegar per gallon. You can make the vinegar stronger if needed. Wear rubber gloves as the vinegar is hard on your hands.
Let the icemaker soak over night with the ice mold and fill cup immersed in the vinegar water. Be careful to not get water in the motor and controls in the box on the end. Scrub the hard water build up off the mold and fill cup. You may need to soak the icemaker longer to loosen all the hard water deposits.