ok i was working on a friends truck putting new ball joints in. my stupid mistake is that when i put it all back together i got the abs wire back in the wrong spot and the rotor wore it in half. my question is can i repair the wires or am i gonna have to replace it

 

Replace it with a new one.
The wires from an ABS wheel sensor are a shielded twisted pair data link style harness. They are sensitive to changes in resistance (like from splices) and outside radio interference.