I placed My F750 to the right of the mirror, so part of it is actually touching the black transponder placement area (some Model Ss don't have this area). It GPS locks fairly quickly in that location, and only a very small amount of black show in the videos in the upper left corner.However an issue is that due to the Model "S" windshield masking it won't get a gps signal installed. Suggest you hook it up before install and let it connect.
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