A little more heatshrink tubing on the OUTSIDE of the brick before feeding the wire back into the grommet, and another little piece to run up to the other end where the connector is, would help keep it from breaking again too. :)
Your guides are amazing! I printed out the PDF, punched tiny holes on the red circles to place removed screws, and just followed along. 10 minutes later, POOF! No more screeching fan, and all the screws went back where they belong! Awesome!