Seasonal Lighting by Acedining. Details:5 volt, 170 ma, 0.42 watt How to Replace a Mini Light Bulb Step 1. Keep the set unplugged at first. Take out the broken light with its base, keep the base and remove the broken light bulb. Step 2. Step 3. Spread the wires and go down the sides, try to keep them centered left and right that help make a cleaner and nice contact in the set. DO NOT let the 2 wires touch or it may cause a short circuit and burn your lights! Step 4. Reinsert the light and make sure it’s pushed in completely. Plug the set back in to see if you are successful.5 volt, 170 ma, 0.42 watt.