i've never seen instructions but you basically disassemble the plastic housing that holds the cable and the ink lines piece by piece and run a new cable through it. The plastic house links snap off using a small flat head screwdriver if I remember correctly. It's not difficult but it does take a long time. If you start on one end and and just copy the placement of the cable (what clips hold it down etc) as you install the new one you'll be okay. If you're not that technically proficient you might find a tech to do this one for you though. It's honestly not that difficult but you do need a lot of patience for this one. If in doubt, take pics at every step so you can put it back together correctly.