So this is my beef also- new 2014 3.6R Limited OB, purchased the optional auto dim mirror with compass and found that it is not interchangeable with the OEM auto dim mirror harness connector, nor is there a connector under the headliner, at least that is easily accessible (I have a 2011 Forester and had no problem swapping out the OEM mirror with the optional auto dim mirror with compass). When I inquired with the dealership they noted that the compass mirror is not available if the OB has either the moon roof or nav (my model has the moon roof). So, has anyone found an auto dim mirror with compass that is compatible with the OEM harness connector or figured out how to rewire to make the optional compass mirror work?