Sorry to add words... but what does the Do-thingee do?

switch things.

Excellent. I have a NOS switch in a box & that dohicky has been rattling around mocking me.

To me, ( and possibly many others), the old saying, " a picture is worth a thousand words", in this instance, just doesn't work very well! Some explanation would be very helpful.
Tom

Hi Speed / Low Speed Wiper Contact ??

Bump.... really would like to know what it does and what it is really called.

I am with tom.

It is the ground strap for the make and break contact on the wiper switch. When you look at the picture you can see it has one side of the contacts.

it's called broken

Once your do-hickee falls off and is lying on the floor, you'll appreciate this thread.