1. Remove the brake lever assembly from the brake cable and cut off the barb and olive, remove the threaded insert and rubber brake cable cover from the brake. (some brakes come with the cable already removed from the lever assembly)
2. To install the brake line into the shockstay. Make the tool above from an old spoke, it will help for guiding the brake cable through the shockstay (also know as a seatstay).
3. Sharpen the spoke on one side and bend it to match the angle of the brake cable line holes on the shockstay.