I'm intending to change my cloth interior for leather - I've had a search but can't find a how to. Am I likely to run into problems putting a 2009 interior into my 2005 car? My car has electric lumbar and light pack, the newer interior doesn't have these but has heated seats and folding mirror switch. Am I likely to get a load of error messages from not having these things wired up, and will the door locks and windows still work ok? I'm considering moving the door card wiring looms across so I can keep the puddle lights etc from the light pack. Is there a lot of cost involved in getting the heated seats to work seeing as I haven't got the wiring in the car? Any help much appreciated!