Window rollup module in a 1994 BMW 740iL

Anyone install a window rollup module in a 1994 BMW 740iL before?  In process of doing so and I found out that the windows are rolled up and down (at the window switch) using a (-) negative trigger.  Now as I write this I am thinking that maybe I should wire it to the motor itself instead of using the switch, any I deals?  In previous installs I wired it to the switch using the DEI 529T or 530T modules that way it was possible to have the one touch control in both directions on all windows.  In the 740, I have one touch for down on all windows but only the driver side has one touch for up.  Any assistance in this matter is greatly appreciated.  Also the same thing is for the sunroof, I would like to add the DEI 529T to the sunroof.

Duh!  bad post.... Found the answer by turning the page in the installation manual