NEED HELP - Does anyone know of any person or shop who has done this at all? I am very close but for some reason the switch is just acting up.

The only issue I have now is that I need to replace 54137128718 which are the plastic sliders that attach to the rear headliner. It is a $10 kit and an easy fix.

I can run everything with the cranks and it functions properly aside from the rear headlienr but then when I plug things in it doesn't like it. Part of it is that there appears to be some kind of interlock between the headliner and the sliding glass. There is a separate motor that drives the headliner and when the headliner is fully retracted the dumb ends of its drive cable push the sliders that drive the diffuser in the front up. Problem is for some reason it thinks mine isn't all of the way back and it keeps trying to run the motor. The only thing I can think is that there is a special position that this thing has to be installed in so that when you move the switch it likes where everything is at originally for it to work properly. . . Or there is something stuck in the track by the diffuser on mine.

Regardless I would really like to talk to someone who has had one of these out before. I think I am very closer. There is just something I am missing.

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2004 e53 m54 with 6spd manual