Need help with wire identification electronic harness!

I think 273 dart is correct. I think it goes to wiper harness. I don't have a wiper washer on car. According to my classic diagram thats where it would
connect to. Thanks for your help!
If you don't have the washer bottle with electric pump but do have the "push to wash" feature in your wiper switch, I could show you how to use that feature as a "one push equals one sweep" intermittent wiper operation. Without the correct type switch you would have to place a push button switch somewhere to utilize this wire through the bulkhead.