just finished fitting polo 6n2 convenience module to my car , i always wanted the look of mk4 keys with remote so i started digign elsa for diagrams etc and here it comes ... convenince part number : 6n0959799c 315MHZ adapted to mk4 key part number : 1j0959753q its very simple all u need is the module with the blue and brown conectors .. pin number 22---------terminal 30 23--------- ground 18,1--------to mk3 central lockink pump green wire open 7,12-------to mk3 central locking pump grey wire close 5,3---------terminal 15 (pin 12 at central locking pump) 11----------to diagnoses port pin 7 (so u can code the module "locking blink and horn or coding a new remote using vcds") brown connector : 13,14 ---------- left and right turn signals 11--------------horn "beeb when u lock or unlock "must be coded with vcds" i fitted the module in the rear behind the cenral locking pump its more neat there will post original setup pics asap , enjoy your new mk4 key heres a link for polo convence diagram http://www.2shared.com/file/DpF_i0Fb/polo.html
see my signature link '6n2antitheft.pdf' I also have the mk4 diagrams g4convenience-.... if you fancy a look at that too. the manual locking type systems can control electronic door lock modules direct so no need to trigger a vacuum pump if you dont want to or have one