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Al G and EdandQ,
I had a wiper delay/parking problem with my 1975 - turned out to be just dirty contacts in the wiper switch at the steering wheel. I have intermittent wipers, and my symptoms were that the intermittent wipers didn't work at all, and the regular wipers would not park.
The wiper switch consists of terminals # 53a, 53, 53b, 53i, 53e, and 53c. During wiper park cycle, 53e (blue wire) is connected to 53a (red wire, +12 v all the time), and this allows the wipers to continue to move until they get to the park position. The connection is made when the wiper switch is off and the wiper motor is not in the park position. The wiper motor makes the connection between 53e and 53a with an internal disk. The wiper switch connection between 53e and 53 puts the wipers into the slow mode, until the disk inside the motor turns to the park or off position.
53a Red = +12 v all the time
53 Red/Black = slow speed wipers
53b black/yellow = medium speed wipers
53i green = fast speed wipers
53e blue = park at slow speed
53c black = washer pump motor
Edand Q - You are local here in Seattle - let me know if I can help.
Rex
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1975 911s
1997 Saab 900s
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