I have ordered the shop manuals for the MDX, but they have not come yet. Does anyone know if the wiring harness is already in place for the right side motorized (auto down on reverse) mirror that comes with the touring model? Is it the same mirror with just some sort of control module? Or is it a completely different mirror? I have a base model and was thinking that since the switch is already in the r/f door, that perhaps one could just buy an add-on and retro-fit that feature.