These guys (in Poland I think, but page seems to be in German?) are offering the parts for the CIC retrofit, but it doesn't say anything about the cables. Like Technic was talking about, these cables are crucial... The auction is for the CIC, the monitor, and controller.. interestingly enough, the pictures show she the display in English. I wonder what region its from/if it matters on the CIC.
Here's the link to the auction:
http://cgi.ebay.com/BMW-E90-E91-E92-...3%3A1|294%3A50
(someone make an offer!)