Adding Texture on Prefab

I'm working on getting textures onto instantiated prefabs. Part of the problem seem to be getting this to work, but I'm starting to wonder that something else is the problem. So I just put a few different models into the hierarchy. Then I added the texture onto the prefab for some and the cube inside the prefab. Both doesn't seem to work. I have a mesh renderer on these models. I tried it again with a 3d>cube and 3d>sphere. The cube and sphere show the various textures just fine. This seems to be the problem. Getting the texture to actually apply to the prefab. My main thought on this is that the prefab has too many small portions from Blender and it's not big enough to show the texture. The other thought is that the texture are showing up too big and only a small amount can be seen overall on the models. How do I fix this?