dragonaught

Hey guys! I recently got Bose center channel speaker that came off of a 1990 tt. I have a 1994 tt that came with the factory bose headunit and 4 speakers with amplifiers but mine did not come with th 5th center channel speaker. I was wondering if anyone here knew how to wire it to work as it did in factory 1990 bose audio systems? I've already searched for days and couldn't get it to work. I also asked for help over at nicoclub but there wasn't much info on it either. Any help would be appreciated!