I'm thinking about the next retrofit and along w/ the auto-light and coming home feature, I'm considering the auto wipers/rain sensor.
So I was wondering if anyone has done that one before. From what I've gathered thus far, the rain sensor is located in the mirror housing:
"The rain sensor activates the windshield wipers automatically when rain or other moisture appears on the windshield, and adapts the wiper interval to match the amount of rain. How it works: light-emitting diodes inside the rain sensor emit an invisible infrared light which is reflected by the outside surface of the windscreen and measured by photodiodes. If the full amount of light returns to the photodiode, the windshield is dry. A film of water or drops on the windscreen break up the light emitted. As the measuring process is permanent, the electronics can control the wiper intervals perfectly."
What I'm trying to figure out is what else is needed beside the mirror? I'd suspect there might be some wiring involved, unless the light/rain information is passed through the same wires as the light information for the auto dimming mirrors, which could well be the case.
Any info would be very much appreciated...