Windshield wiper followup

[Ron Soderberg]

Yesterday I posted a question about the electric ground location for the
windshield wipers on my car. In the post I didn't identify the car as a
1990 Audi 100. I don't have access to the electrical diagrams for the
car so I can't look it up. I am going on a trip starting tomorrow and I
would sure like to get the high speed on the wiper working before I
leave. So if anyone knows the ground location on on this car I would
sure appreciate your replying. Thank you