Your wiper system

I took apart the wiper system since it was over its 42 year/50,000 mile service interval.
To remove it you need a 3/4" wrench for external wiper shaft nuts & 7/16 wrench for wiper motor mount.
To disassemble use a 3/8 in the wheel boxes and 1/4" on the gear box.
There are c clips and bushings on the arm that goes to the cable , and the gear shaft that goes through the housing.
I cleaned the dried out grease & regreased and added some drops of synthetic gear oil

The internals of your wiper system:at the top, wiper motor w worm gear and gear housing, 

driven eccentric gear,

arm from gear to cable, the cable is like a low E string on a guitar-just mega sized to drive the wheel box, 

Then the cable goes through the tubes to the wiper boxes. 

The beauty of this system is that it can be any length and curved around objects.  The dark side: made by lucas.

Quick update: the car was rolled under cover for storage at a friends house while house hunting... May have it going by new years lol.