@Allan,
Regarding what I am trying to do, currently my stereo, hvac unit and other panels have no night light in the buttons, which sucks as hell in the night, as I cannot see anything. I have two pictures available so you can see what I'm talking about:
http://img526.imageshack.us/img526/3931/20121223202217.jpg
http://img59.imageshack.us/img59/8426/20121223202224.jpg
I have spoken to Jochen, a member of this forum, and he advised me to check the diagram and try to pin point the problem, by checking what lights up and what doesn't. So I basically checked the 58g terminal on the diagrams starting from the LSZ, and considering the instrument cluster works, I think the problem should be either on the x1019 connector or before that.
Now I am currently at work so I cannot check under the gear shift lever, but I will take a quick look later and post a picture of how it looks.
And Greg, what do you mean by earth blocks?