Hi everyone I am looking for a lil advice if anybody can help? Right here goes...I have a 1999 S3 8L pre facelift,my problem is driving me nuts :s I have retrofitted a Audi RNS-E to bring the dash up to date went smooth as with no problems all works brilliantly the plan was to fit the facelift climate control unit, I have the 2 screen model and wanted the newer facelift version as it matches the colour of sat nav and I can put heated rear window and heated seats controls there and fit 2 cup-holders up top. Well I plugged it all in and it don't work the screen doesn't light up in fact nothing does, so turned headlights on to see if it lit up, it didn't the blower motor started turning? This leads me to belive some of the wire pins need swapping but I cannot find which ones. If anyone can offer any advice I will be eternally grateful many thanks