I was wondering how difficult it would be to put the defogger style rear window in my truck and put the heated mirrors on it. I know i would have to get the ac cluster with the button for the defroster but are all the trucks with the power options also pre-wired with the connections for heat also. I almost backed into another truck at my apt complex this morning cause my back window had too much dew on it and i couldnt see out of it well so im really interested in doing this.