For about 2 years I have had similar problems with the washers. I changed just about everything. They would work for a while, even up to a year. Well see the image, you may have to expand it to see the cause. Chafe in the loom behind the plug that goes into the wiper stalk. The loom rests on the metal part of the steering column support. I had worked out the problem was in the LGB (light green black) wire but initially could not see that wire with the limited access.
![[Linked Image]](https://tm-img.com/images/2024/08/26/96B73933-74BD-424F-8A43-AD1DB3AB1D50.jpeg)