91 Dodge Grand Caravan

I have a 91 Dodge Grand Caravan SE with 123,907 miles on it. It has a 3.3 liter engine and will not start. With the key off the following works electric locks, dome/map/glove box lights, horn, cigarette lighter, 4 way flashers, electric mirrors, head and tail lights, and tailgate lock. With the key on the following does not work wipers front and rear, radio, instruments/instrument warning lights, and turn signals. With the key on the following works power windows, electric locks, heater, rear defogger 4 way flashers head/tail lights horn cigarette lighter, power mirrors, warnining buzzer for lights/key, and tailgate lock.