Clean the surface of the grille. The easiest way to apply this is to wet the back of the vinyl. You can even use a little soap. This will allow you to slide the vinyl around, but will make it harder to stick. You will have to wait until it dries completely to complete a wet installation. A dry installation is possible as well. The stripe tapers down towards the edges. Right before it tapers down is the part you place in the corners. Start at one corner and slowly apply the stripe to the grille. Continue until you reach the other corner.
One of the easiest things I’ve ever done to my car that has made one of the biggest impacts by far. The stripe applies so easily and even after 1500 miles of hard driving (and 5/6 washes) it’s still stuck perfectly to the grille. Extremely satisfied with my purchase