Solar lights can be installed in two ways: in the ground using spikes and mounting them on the wall using wall brackets and fixtures. While some solar spotlights come with one of these options, most products include both installation options. To install solar lights in the ground, you need to find a proper place for the spike. You need at least a 3” spike to provide optimal balance and stability. Do note that some spikes are not as sturdy as you would think, so make sure to stick them carefully, or else the spikes will break. For wall or fence installation, you can fix the brackets using screws and follow the directions on the instruction manual that comes with the solar lights.