2003 Jetta GLS, prostart remote start

I don't see any wiring digrams specific to a 2003 Jetta, but I know these cars were the same for several years running.  Can I safely assume the 2002 and 2004 diagrams provided should be the same (after verifying to a certain degree of course). 

Here is the unit I bought if that helps:

http://canadiantire.ca/browse/product_detail.jsp?PRODUCT%3C%3Eprd_id=845524443249441&FOLDER%3C%3Efolder_id=1408474396672077&bmUID=1166321324818

I've never installed a remote starter before, but have done some minor auto wiring - is it much of a headache? (understanding access to wiring can be the largest obstacle in many cases). 

your link does not work. at least for us guys in the states.

And YES, 02, 03, and 04, are the same.