I just did this, here are some pointers:
After removing the center console and the original glove box (see
HERE) you have to remove the extra crash bar and its support:
It's two T30 screws. To get at the top one, you have to remove the airbag. On the Jetta, you can just lift the airbag door open:
(yes, that's the contents of my glove box exploded onto the dash. I should clean some of that junk out...)
Remove the airbag. 4 T30 screws. The eletrical connector is on the bottom. Take care when handleing and disconnecting the airbag.
With the bar removed take out it's support. 3 8mm bolts hold it in place. Access on the left one is tight, have to use a wrench.
Here is the difference between the US box and the late US / euro box:
US box (note the crash bars on each side):
Euro box:
Much bigger!
Rather then reuse the light wireing from the US box, I connected mine to the power going to the 12v outlet in the dash. That way, the light in the box always works, not just when the key is on.
-Jason