Hmm. What car and year is it for?? do you have a link for the website that you bought the lights from?? I'm not to familier with the Corrado, Scirocco, and Fox cars but it should be just like any others.
The guy who owns this dub is on http://www.dubsquad.net
Here's the info i got on him.
Mike (maninaG60)- 90 Corrado G60
I would try and post on there to ask him how to install it. I would think that it would be straight forward swap, take old headlights off, put new ones on but i'm not sure how the wireing diagram is or where all the screws are to detach it.