1998 Jeep Cherokee REAR WINDOW ALARM/LOCKING

I HAVE A 1998 JEEP GRAND CHEROKEE LTD, AND WHEN I LOCK AND PUT ON ALARM, THE SYSTEM WILL WORK MOST OF THE TIME. QUITE FREEQUENTLY RECENTLY, WHEN I PUT THE ALARM ON, THE REAR WINDOW CONTACTS WILL COME FREE, SETTING OFF THE ALARM, REGARDLESS OF THE TIME OF 200 PM OR 200 AM. ALSO WHEN I AM DRIVING, THE INTERIOR LIGHTS WILL COME ON, AND THE CONTROL PANEL WILL SHOW THAT THE REAR WINDOW IS NOT SHUT, EVEN THOUGH IT IS.
I CAN USUALLY GET OUT AND RESET THE CONTACT BY GENTLY CLOSING THE WINDOW, BUT IF I TURN A CERTAIN WAY, OR HIT A GOOD BUMP IN THE ROAD, THE SAME THING WILL HAPPEN.
THANKS