I've been able to get everything working in P3D 2.5 for the Level D 767, except the ground call causes a CTD every time. I realize it was not made for p3d. I just want to get access to the ground power unit. I've tried to use the custom controls that come with the plane (there is a key sequence to attach GPU). This still doesn't work. Has anyone found a way to get the ground power connected? 

According to the following link, this product cannot be modified for P3D http://www.leveldsim.com/forums/leveld-767-with-prepar3d_topic23902.html.  It was developed for FSX/FS9 only.  Therefore I interpret installation in P3D as a violation of their EULA.  Topic locked.