Hey, @rockor.
Difficult probably wasn't it, really. It was the first time for me, and I basically took more time than I probably needed, solving some initial problems, like the hole for the water hose, and then fumbling around connecting wires.
That's usually the way it is with me. The first time generally has some unforeseen (to me) problems to overcome because I wasn't knowledgeable enough to avoid or overcome them to begin with.
I do have to say, though, there was a level of satisfaction to this. Having my wife think I can do stuff—that's a double-edged sword. :)