hi i have a 04 2500 cummins i want to install the factory u connect on my truck i did some research on the forums and came up with this the factory parts are rear view mirror 4806228ab module 5064013ah harness 5089051ab radio rb1 or rb4 what i want to know is ther anything else i need. and will my computer support the u connect being it was not installed from the factory, some people said it worked fine with these parts they said the connections were ther from the factory behind the a frame pillar i just want to find out before i make this investment i know the mirror comes up as a 300 m mirror but i dont think that matters if anybody has done this before or has knowlege of this i would gladley appreciate it thanks