1999 Plymouth Voyager Dash

Good Afternoon, I have a 1999 Plymouth Voyager, 4 cylinder van with about 98000 miles on it. For the past 6 months, every now and then the dash (speed, gas, heat thermometer) would just die. The needles would drop to zero. So we would hit the top of the dash and it would all come back on; everything would be working fine. For the last month, when the dash would go out so would the winsheild wipers. Now I have a brake light that comes on (only when you turn left). Today the dash completely went out on us. The rear windshield wiper does not work. The front winshield wipers only works on low or high, no intermittent. Can someone please let us know what this problem may be? And if we are able to fix it ourselves?