1995 Jeep Grand Cherokee wipers, windshield & visibility problems

Power windows failed due to electrical problems, also interior lights/air conditioning/abs/driver information center/air bag failed.

Evaporator leaks into car. Mechanic says its a bad design and I need to bring it in every 6 months or so which is what I have done the past two years I've owned this car. Despite repalcing evaporator core three times, mechanic says design of drain into the vehicle frame cause it to continuously block up. There is nothing that can be done to permanently fix this issue. The smell from the water that leaks into the car, passenger rear seat floor board, is horrendous.