HI This is all very useful, as I have just done the same job - wish I had seen the picture of the tool you purchased to remove the D connector to the drivers door lock as I snapped the clip trying to get it off, I have brought a wiring kit and soldered the new wires onto the loom, however everything is working except the rear drivers window switch and the central locking the drivers door will not activate - I have put my hand inside the door frame and wiggled the D connector and the door will lock sometimes but its hit and miss. I have checked all the solder connections I made with the wiring kit and they are all good no breaks and have chased them through with a multimeter, I also replaced the audi (BCM) control unit ( Black box), but I get the same issues. Does anyone have any ideas