I had the dealer install the OEM homelink auto dimming mirror today in my '15 S touring. Overall, I like it. It's bulkier than the standard mirror, but I can get rid of my transmitter for my garage door and the compass is nice to have. Come nighttime, however, I was surprised to find out that this mirror also has an ambient LED light built in on the backside of the mirror housing. Given that Mazda really skimped with interior illumination on the car, this is a great feature that I'm really happy to have and I had no idea it came with the mirror. The install instructions call it a "shift light". It's white to match the rest of the lights in the car. It's not super strong, but it does help class up the interior a bit. Anyway, I've not read this mentioned here, so I thought I would share if anyone was interested.