I'd avoid the external if possible - very easy to damage. My daughter hit a deer with her Saab, Deer took off into the woods and only damage was the external ez pass.

Mine is also just below the black dots but behind and to the right of the mirror. works fine and is pretty hidden.

2007 Camry Hybrid - Titanium Metallic - sunroof, heated mirrors, mud flaps and body side molding.

2004 Honda Pilot EX- Midnight Blue (another great car!) http://www.hondapilot.org/