Gibt es in USA bei Bavarian Autosport. Gibt mal diese Bestellnummer oben links bei denen in der linken seite ein.
BMW2T
Add the convenience of 'one touch' windows or sunroof to any BMW. Fully compatible with any factory BMW power window system. Simply tap the switch once and the window with travel all the way up or down. There's never any need to mount additional switches because Autoloc's BMW2T works with all BMW factory window switches. The BMW2T may be used with any remote control devices that operate your windows.
$ 119.95 fuer 2 Fenster
http://www.bavauto.com/shop.asp