I was surprised to find that my 2013 CX-9 (Grand Touring package) did not come with an auto dimming rearview mirror with Homelink, etc. I see you can order one from Mazda for $250 however, I asked my local dealer what the installation charge would be and he gave me a quote of $230! He said they had never done one but the technician looked at the installation instructions and estimated 2 - 2 1/2 hours of labor time. Has anyone on the forum had this done?