1991 Ford Taurus weird things happen

1997 Ford Tauras the door ajar light comes on even when all doors are shut, it stays on about a week and than the check engine light does the same thing, then the seat belt light comes on and you can hear a clicking noise, when this light comes on the windows won't open, no radio, cigg lighter, and the stearing gets hard to turn. If I put it into park then everything works okay until it goes into gear.