High Beam keep blinking!

Hi guys I recently having this problem of my car's High beam will keep blinking after I drive the car for awhile on road! It happends whenever at night when I turn on Auto headlights... it will sometime keep blinking high beam!!! And sometimes when I try to pull the lever to turn it off it won't go off just keep blinking or stay on High beam... I have replaced my Anti Theft Alarm (OEM BENZ) two weeks about because my alarm will suddenly goes off while driving on the road. Please give me some ideas or advise of what is causing the problems of high beam keep blinking and stay on????? Thanks!