Car Alarms: 1999 FORD MUSTANG KILL FACTORY ALARM, ford mustang, dash board

Question
HOW DO I RESET ALARM, PARKED AT NIGHT AND IN MORNING WONT TURN ON??

Answer
If you are referring to the theft light flashing in the dash board when you try to start it, the transponder is not working properly.  If you have a second key try using that to see if it is the key or the antenna pickup that is faulty.  If you do not have another key you may have to take the car to a dealership to get a new key.  If this is not the problem you are having, please elaborate on the issue.