996 turbo cab rear window problem

[Browzer52]

Have a 2004 996 turbo cab. Problem with the rear windows either not going all the way down or all the way up when activating the convertible top. They do however operate properly with the console switches. Wanting to know where the module is that coordinates the rear windows with the top. Any input would be greatly appreciated.... photos and a part number for said module would be great. Thank you in advance.