thanks again everyone for your responses and previous posts. I followed the instructions and was able to replace that old frayed wire.
these are what the dimples look like from the outside, there are three of them. I used a small screwdriver, hammer, and needle nose pliers to knock them out of the way.
This is the inside of the housing. I took this picture after I replaced the wire.
This is the old wire.
Here is the new wire.
I reversed the process and put it all together. I used a small screwdriver and hammer to put the dimples back in place.