Hi, I'm new here, I have a golf 5 2004 model, I bought the Golf 6 air-conditioning unit, saw diferent problems that can accour with this update. Can someone tell me step what should i do step. Can anyone show me the pinout for this procedure? I saw that pppman had a step by step guide on its site, but is now offline. What's the problem I would have except the back pressure valve that does not work?