Paul, I am really struggling to find these bits, we are moving after Christmas so a lot of things have been packed in readiness. I dont remember packing them, but i cant vouch for 'er in doors !!! I will keep looking.
I found the following, which apart from the fact its for a different car, its in German and not the Polytechnica ones I am familiar with, the wiring diagram explains the principle.
http://www.mgfcar.de/one_shot_windows/benxon.htm
Edde, from memory, the Renault windows can be user programmed.
You start with both windows down, then hold the drivers window button in the UP position till the window closes and you hear the relay click, then hold all the way down and again wait for the relay to click before you release the button, then UP once more, same procedure then repeat with the passenger window......job done.