Hi there from one Mancunian to another. I used to live in Denton, Manchester many many many years ago. But I digress....
Here is a link to a site that shows a Toucam mod that uses 3 connections to the parallel port:
http://homepage.ntlworld.com/peter.l...ingToucam.html
The circuit diagram is at the bottom of the page. It is also in a trendy black box like yours. Maybe it is the same mod who knows.
Looking at the pic of your parallel port connector, I can definately see that something has been soldered to pins 2 and 21. It also looks like something may have been soldered to pins 4 & 5 as well. It is a little hard to tell with the pic being out of focus.
Sorry I couldn't help with what wires go where. I just wanted to show that there are mods out there that use more than 2 wires to the parallel port.
cheers,
Andrew