Product review (4 stars): I was very happy. There are only 5 steps in the instruction ...
It works!

I don't fix many things around the house so when I actually fixed this one, I was very happy.

There are only 5 steps in the instruction sheet, which is the size of an index card.  When it comes to connect the new and old exposed wires, the graph on the instruction sheet seems to suggest we simply put the two side by side and jam into the wire nut. Since the wire nut is cone-shaped inside, I did squeeze and twist the new and old wires slightly to fit in the nut.

In the next step, I failed to secure this connection with the provided Heat Shrink sleeve somehow. I ended up using vinyl electrical tape, first to secure the two wires together, and then to secure the wires-and-nut connection.

The other time consuming part of this was actually looking for screws that fit the new mounting bracket, as our old bracket was slightly different.

Have fun and good luck !