The only thing I'm finding in my Haynes manual is a yellow/green wire that has a wire splice that turns to red wire going to the brake wear sensor. the lilac/white wire goes to the washer level sender and is tied into the brown/white wire. Reference is page 12-28 of the Haynes Repair Manual for the Golf, Jetta, and GTI 99-05. I hope this sheds some light on the problem. As far as the cluster itself goes any model should work. Your gonna have to get it programed to the car though.