At first, windshield wipers only worked on intermittent - now they quit working altogether on my 93 mercury Villager.

Are they all on the turn signal arm

It might be either switch itself or wiper relay.
Ufortunatly I don't know location of the relay.
You can actually find relay by noise , put the switch on intermittent position and see where the cliking coming from.

go to our villager site for help. The wiper motor has a governor assy, that is what you are referring to. What is the problem?
Windshield Wiper Governor Removal
The windshield wiper governor (17C476) is located on the LH side of the engine compartment behind the battery (10655) .

1. Remove the two windshield wiper governor screws and the windshield wiper governor .
   
2. Disconnect the two windshield wiper governor electrical connectors.
   

http://groups.yahoo.com/group/villagerquest/

switch or motor, not trans.

go here for help

http://groups.yahoo.com/group/villagerquest/

replace the multifunction switch (turn signal/wipers)

go here too

http://groups.yahoo.com/group/villagerquest/

replace motor. the plastic gear in the motor broke and is not serviced separately. go to car-part.com and look on page with * for lowest price.

or eaby.

remove leaf screen at base of windshield for access. remove both A pillar mouldings to be able to remove screen.

remove wiper linkage to access motor. Watch very caefully how linkage comes out and memorize it. It is hard to get back in.

On this vehicle you have a wiper/washer amplifier assembly that mounts on the drivers side strut tower under the hood.Unplug the 2 connectors to it and check them for corrosion and clean them and reconnect and see if that solves you problem.If it doesn't then you would have to have checked to make sure that this module is not bad or if your wiper switch may be bad.

Reservoir —Windshield Wiper

Removal

1. Remove the RH wheel; refer to Section 204-04 .

1. Position RH splash shield aside.
   1. Remove six screws.
   1. Remove three pin-type retainers.
   1. Position RH splash shield aside.

1. NOTE: Windshield washer fluid should be collected in a container after the windshield washer hoses are disconnected.
   Disconnect the electrical connector and washer hoses.

1. Remove the upper reservoir bolt.

1. Remove the windshield washer reservoir.
   • Loosen the two lower reservoir bolts.

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you likely broke the plastic gear inside the wiper motor by turning wiper on when wipers were frozen to glass. you will have to replace the motor.
you can buy motor on Ebay cheap.
you have to remove screen at bottom of windshield for access. remove side windshield mouldings to be abe to get screen off.
watch very, very carefully how you get wiper linkage out or you will have a hard time getting it back in.

you have to pull the steering wheel and there are three torx screws holding the arm on