MOPED ARMY

I was putting new tubes and tires on my 78 Garelli vip 2, and when I went to go put the rear wheel back on, my brake cable had frayed and I was able to put the cable through the cable but to attach it the the rear brake assembly. I need to buy a new cable, I just don’t know which one to buy. I thought I might as well get a new front cable as well, since it’s not looking to good either.