Fusible link?

I went to the parts store to buy the fusible link. They had no idea what it should be. They had different color wires but no amp rating on the packages.
My intention was to buy new link, but could not find anyone that had any idea who,what,or where to find it.
So I went to the fuse instead of not having any protection.
If I can find the proper fusible link, I will replace the fuse with it