1999 Mercury Marquis wipers

The first thing to do is remove the wiper arms. Set them aside as left and right side. Remove the plastic cowl that covers the wiper transmission. There should be several bolts on the sides of the wiper trans assembly. Remove the bolts, unplug the wiper motor and remove the assembly. Flip it upside down and remove the retaining screws to remove the motor. Install in reverse order. If you have any trouble post back and I'll walk you through it.