To replace the antenna, first pull the antenna cable straight out of the radio if it plugs directly in; if not, disconnect the antenna lead-in cable from the in-line connector above the glove box. Next, work under the instrument panel to disengage the cable from its retainers, and if necessary, remove the instrument panel pad to access the cable. Outside, unsnap the cap from the antenna base, then remove the three screws and carefully lift off the antenna, pulling the cable with it. Discard the gasket, then place a new gasket in position on the cowl panel. Insert the antenna cable through the hole and seat the antenna base on the cowl, securing it with the three screws. Position the cap over the antenna base and snap it into place, then route the cable in the same position as before removal behind the instrument panel and connect it to the radio or in-line connector.