Yes - pretty straight forward. The only awkward bit it getting the upright to stay upright if you mount it upside down.
In my experience, on my cage anyway, if you mount the upright the correct way around, then the wheel ends up being a little higher and may need a step up to it. The way I've mounted mine he can easily climb in.
Not that he's decided to use it yet, the ungrateful little so and so
