Product review (4 stars): Don't throw away the old unit for a few days.
We had to look on youtube for instructions that were clearer than the enclosed ones.  But having said that and read other reviews, my  husband was able to install this icemaker in  a short amount of time.  Be aware, however, that one of the reviews warned that the metal arm that goes up and down to allow ice to be made or halted was not long enough to stop the ice from continuing to be made.  So we took the arm off of the older unit and reattached it and it did the job.