I installed the unit and work as expected (mine is VW Jetta GLI 2007 and I did not needed to wire in pararell on Connector C and B)
Parts I needed:
1K0 858 069 M 1QB Trim
5K0 907 044 BT ZJU Climatronic Unit with Celcius, metric system in my country (5K0 907 044 CB ZJU with Heater button)
1K0 907 530 AD Can Gateway ('S' revision or later might work also)
3C8 937 049 AB Power Electrical Module (For compressor to work)
1K0 907 659 Quality Sensor (optional)
1K0 971 939 C Holder (optional)
1J0 972 483 A Quality Sensor Conector (optional)
000 979 009 E Quality Sensor Wire X2
On A Connector (black) extract both; Pin 16 and Pin 20 and put Pin 16 on the place were Pin 20 was, leave the wire on Pin 20 loose (not connected to the harrnes) for later connect the Air Quality Sensor if needed.
If you have an older VW Model you will MIGHT need this wiring change ATTENTION: Please don´t quote me on this, I just really followed some threads on VWNAVI that mention this change. It did not applied in my case)
Motors in parallel:
On C Connector (brown): Pin 7 connected to Pin 10 and Pin 8 connected to Pin 9
On B Connector (black): Pin 6 to Pin 7
Quality Sensor Wiring (OPTIONAL if you bought the module that handles it):
On C Connector (black):
Pin 1 from Quality Sensor to Pin 20 (which we replaced by Pin 16 on Climatronic, remember?)
Pin 2 from Quality Sensor is Ground goes to Pin 19
Pin 3 from Quality Sensor to Pin 4 on Climatronic
YOU NEED TO MAKE THIS STEPS (My compressor did not work until I performed the 2 step):
First Step: Basic settings: hold button AC + button straight blowing (third button from left). You will see both buttons leds blinking one after another..let them run till they come to the normal status. Reference: http://www.my-gti.com/2513/volkswage...ostics-mark-vi
Second Step :Compresor Settings: Starting the engine and hold LONG-AC + heating rear window.Let it run till it comes to the normal status.
Thanks to lala30 and mogwai on the vwnavi forum.