I am struggling to figure out how to install the Wilwood E-Brake adapters that came with my kit. I have Wilwood brakes and IRS. The picture of the adapter in the manual shows a slot that would allow you to install the cable end. The adapters I have do not have that and I don't see how to install the cable end.

Below is a picture of what I received:
20190817_143127.jpg

Are there different versions of the adapter?

Thanks for any guidance you can provide. I wanted to see what i was missing before I started trying to cut things up.
Brian