Your missing the little metal cable end. Its a silver looking cap that goes over the end of the black part. Look at the other end of the cable, there is probably one there. Not sure if you can buy just one of them things. I buy bicycle cable kits and it comes with a lot of em. A quick simple fix, squeeze the curved part with some pliers and close it a little. If that's not enough to hold it,, I've seen some karts with a washer stuck between cable jacket and the plate. It takes up some slack and will help hold it. If that dont work, remove cable from jacket and put it back in the other way ,IF the other side has the silver part on the end. If not, buy a new cable..... hope that helps....
