hi, i installed leccy windows to my 1.0l micra. easy peasy. there is no magic box. i searched for a good hour in the donor micra, and couldnt find it (removed the whole dash)
i then went to an auto electrician, who confirmed there is no control box for the windows.
i took a feed to a wire, and earthed them on the doow, there is an earth, and a feed, and then two "control" wires, which join on to them.
i will look at the colours, and take a pic to show, but mine work fine, and have been problem free for 3+months.
i have the basih door cards, and these were easy to mod to make the longer arm rests fit
you wil need more trim clips, as there are five bolts, not two.
the only thing with mine, i havent wired in the central locking switch, as i have remote locking, and i havent got the second switch on the drivers side to operate the passenger window, not really tried though..