Rear Window Wiper Washer problems of the 2008 Dodge Nitro

I live in metro atlanta and I have a 2008 Dodge Nitro. I love my truck but 12/01/11 brought my love to like and I don't know what to do. I work 2. 7 miles from home - on my way home 12/01/11, the horn started sounding, lights were flashing, doors were trying to locking and unlock, front and rear wipers came on, and the water for the wipers started spraying. I pulled over, cut the truck off for about 5 minutes and started it back up. Needless to say that did not resolve the issue. I drove all the way home with all these things happening. Once I got home, 'I cut the truck off" and the wipers were still going as well as the horn, the exterior lights, and the door locks. So 'I took the key out' and wouldn't you know - everything continue to do the same thing. Ended up disconnecting the battery. 12/02/11 I connected the battery from the disconnect the night beofre and the horn sounded for a few seconds but now my heater is not working - on the way into the office everything happened again. Pulled over and had truck towed to the nearest Dodge dealer. My Nitro has 77,006 miles on it.