Before installing Eyelights, make sure that you properly washed and dry your dashboard. Then you must use the adhesive metal plate provided in your pack. Take of the protective film and stick the metal plate at your ideal spot. Once you stuck it on your dashboard, press firmly and wait for a minute for the adhesive to dry.
If your dashboard does not have a smooth or flat surface where you want to stick the plate, you can use the yellow adhesive foam provided in your pack by placing it under the metal plate in order to absorb the various asperities and be able to properly install your tablet.