Both the vehicle's surface and the brown magnetic side of the sign should be clean and dry. The vehicle should be waxed prior to applying. Let one edge of the sign contact the vehicle in the desired position. Then let the magnetic power do the work as it puts the sign into place from the edge where you started to the edge of the opposite. If the sign is not exactly where you want it, peel it off, reposition the starting edge and repeat. Make sure that the entire surface of sign is smoothly against the vehicle with no air pockets underneath. In winter, the temperature of the sign should be about 50°F during installation, but the temperature of the vehicle surface does not matter.
Remove the sign weekly and wipe dry both the magnetic side and the surface of the vehicle.
Refer to the directions that come with the magnetic sign for additional information and instructions.