I just bought a used 2006 LE Titan last week, and am in love with it (I have driven Frontiers for the past 10 years and finally manned up). I have really appreciated all of your knowledge on this forum and hope you can help me with some pictures or diagrams of how to replace my back-up sonar speaker. I believe it is why my "back-up sensor" light has been staying on, as I have tried your previously posted diagnostic advice and don't hear any beeping whatsoever (during the test). Any help you can send my way would be greatly appreciated; I'm no mechanic, but am fairly comfortable splicing some wires together or doing some minor soldering. I read where one Titan owner replaced his speaker with a stereo headphone speaker - heck, I'd try anything if you think it will work. This baby sure is bigger than my old Frontier, and backing up is a whole new world. Thanks in advance - Dave.