Got this car about a month ago I knew the wipers didnt work I thought no biggy heck I'm an auto tech who works on high tech Audi's right? WRONG!
I rewired the starter side of the engine bay with a new harness from M& H it has a 2 pin connector with a yellow and a blue in the 2 pin connector in came with a single yellow extension harness that was hooked into the 2 pin yellow/ blue wire dont know where it goes no instructions with harness the yellow does have power key on. with connector hooked to wiper motor I can ground the blue in the 2 pin and the motor goes through its cycle so motor is good. The wires from switch are all there (all 3 of them) cant tell what color they are but traced them from inside from wiper switch. Looked at some wiring diagrams on this site (cant find them now didnt save to favorites) Wiper motor
also has a single terminal right below 2 pin on side of motor for yellow/blue hooks up to.

Is it a easy as a bad wiper switch or could motor be bad on one circut
wiper switch only has 3 wires on it 2 in one 2pin connector other by itself. Anyone got an idea or send me some pics of thiers

In 66 the two speed wiper was optional. The two wires, yellow and ltblue are used for a single speed wiper. The wiring for the two speed uses the yellow power wire the rest is separate from the engine harness. Here's (http://www.wiringharness.com/images/parts/28465.jpg) a pic of the two speed harness.