There is a nylon cable that goes inside your antenna. This has probably broken and is disconnected from the motor. Some say you can unplug the connector to the antenna located under the hood by the heater box to get the motor to quit. I didn't have any luck with that so I disconnected the power relay behind the glove compartment. You will need to get a repair kit and replace that cable to fix the problem. Directions are on http://www.gnttype.org/techarea/bodygauges/antenna.html Good luck.