i have a 99 f150, i had a viper alarm system put into it. this morning my wife set the alarm off and since then i have not been able to start the truck. it has plenty of juice, but when i try to start it, i get nothing. i disconnected the alarm like the installer recommended and still nothing. he mentioned that it had a factory anti-theft device in it, has anyone heard of such a thing? Does anyone have any thoughts about this?