On my car I put in a fresnel lens that lets me see the car behind me and it works ok but depends on the sun. I'm so used to looking at the top of my rear window to see however that I'm wanting to upgrade to a camera and display system but just planning to put the display at the top of the rear window where I'm used to looking at the fresnel lens. Powered from the backup lamp so automatic on when in reverse.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)