Product review (5 stars): Perfect replacement on Kenmore series 80
Lesson learned - don't just let the lid drop on your washer!  Ours deteriorated over time - for a while we had to put the detergent bottle on the lid to get full loads to keep running and didn't understand why.  Now we know that it was the lid switch beginning to fail.  When it did fail during a load I managed to unscrew it and hold it together to get through that load.  This part is a perfect replacement for the original.  I used this YouTube video to replace it:

Washer Repair- Replacing the Lid Switch Assembly (Whirlpool Part# 3949247)

I am wearing a clean shirt today thanks to this part!