2001 1.8T (with sensors)
Found this link and it really helped me out, turned out contacts were bad so easily fixed.
May be of some help to others.
http://uk-mkivs.net/forums/t/184536.aspx
How to change rear interior lights with alarm sensors
Moderators: water01, desertstorm, vwnutant
How to change rear interior lights with alarm sensors
1.8 T SE 2001 (Y) AWT Engine