The solar outdoor lights are easy to insert into the ground or mounted on the wall without wire required.Warm Tips:1.Please confirm the switch is under "on" status so that the light could be charged normally and auto lights on at night.(Cover the solar panel in the daytime or go to the dark environment for testing.)2. The climate problem, like rainy, snowy, cloudy will cause the item to not be charged, then the battery is exhausted, it will light up after the battery fully charged in direct sunlight(at least 6-8 hours).3. The solar light will not work when it is illuminated by other lamps. Please make sure there is no other direct light when use the solar light.