windshield wiper motor

with a car that old, you should buy a repair manual.

Cycle the wipers until they are straight up position, turn ignition off. Disconect the battery. Remove right hand wiper arm and blade assembly. Let Linkage drop into the cowl then remove the linkage access cover from right hand side of dash panel. release wiper motor retaining clip and slide the clip back until it clears nib on crank pin. The retaining clip can be reached through the access cover opening. remove wiper linkage from motor crank pin. Disconect electrical connector from wiper motor, then remove motor attaching screws and the motor. Reverde procedure to insatall

This information is from Alldata service Program Hope it helps