To replace the antenna on it first you have to removed the radio from the instrument panel and then unplug the antenna which is at the rear of the radio. Third, pull the antenna cable from the plastic clips that are found at the top of the defroster nozzle. The antenna cap is to be unscrewed; for models from 1997 and later, there is a sleeve that has to be pulled up, afterwards there are loosening screws and mast screws and finally the cap. Put a string through the radio end of the antenna cable and the other end is tied to the instrument panel so as to pull new antenna cable along the same as the old one. Unscrew the few screws that holds the combination of the antenna base and the body then gently pull the antenna cable through the hole in the body, then take out the antenna as well as the gasket. For reinstalling the device back do the following; replace the gasket, cut the string, reconnect the new string to the new antenna cable then try to pull it back to the body hole and eventually remove the string.