what is this?

Yes. it's the self adjuster cable.


The cable goes on the rear shoe for the brakes. Here's some pictures that may help you figure it out. I have a few more if you need them.

Pass side:

View attachment Rear Brake A23 B.jpg

Pass side:

View attachment Rear Brake A24 B.jpg

Drvr side:

View attachment Rear Brake A26 B.jpg

Drvr side:

View attachment Rear Brake A27 B.jpg

Drvr side:

View attachment Rear Brake A28 B.jpg