@Jorn: I bought my engine harness on Ebay about a year ago. Ebay is a great source for used parts and can save you money. Also, ILUVMILS just posted he has a harness for sale. You might contact him.
These cars have two different part numbers for the harness: 124 440 5632 which is the most commonly found harness used on cars built into 1995. Later 1995 models might have the harness 124 440 2933. These are not quite as common and if I'm remembering correctly, there are more connectors and installation isn't quite as easy as with the 5632. These harnesses are more expensive as well. I've seen a few of them on Ebay selling for around $650 used.
I was fortunate to find mine for around $125.00 total and it has a build date of 2003. Hope that info is helpful.
Bruce (dcman2003)