I'm seriously considering retrofitting cruise control to my 2003 A3 2.0 TDI, but having never done anything like this before (on any car), and being new to Audi's in general, I could use some advice please. I found a guide to do it on here - http://www.audi-sport.net/vb/a3-s3-sportback-8p-chassis/111696-cruise-control-retrofit-guide.html From what I've read (if I understand it correctly), I can get a dumb VAG cable on ebay and use VCDS-Lite to enable cruise pretty cheaply, otherwise find someone in the area to enable it. I'm not sure what part numbers I need though. I've done some googling and couldnt come up with much, the best I could find was someone talking about a 2005 2.0 TFSi, the part numbers were: 8P0 953 513 B (9B9 Black) New switch with small cruise control 8P0 953 512 A Trim lower part for models with cruise control system 8P0 953 549 C: Electronic Module for steering column combination switch But obviously that's a newer car, and the parts might be different? Can anyone tell me the part numbers needed, or even how to find part numbers myself?