I looked at the instructions on line. I read other people's comments which was very helpful. If I hadn't done that, I would have been confused in some parts of instillation. The most challenging part was putting the 2 screws in the white plastic parts that were by the door latch at the top of the dishwasher. The other tricky part was taking the ribbon off the part. I needed pliers. After installing it , the dishwasher worked perfectly!