Unscrew the mast. With pure dawn dishwashing liquid, clean the area around the antenna base. You're removing wax from the car. Leaving the tape cover on, put the antenna over the base and then use masking tape to mark the front, left, and right edges of the antenna. Remove the antenna. Next, take the tape cover off and screw the antenna wire into the antenna base. Now very, very carefully put the antenna cover back on the roof of your car making sure it is straight and centered. Once it is, press down hard, making sure the antenna is completely pressed against the roof of your car and hold for about a minute. Remove the masking tape. In a couple of days you can wash and wax your car.