That is great feedback. im thinking of adding rear view cameras in our X5. Was going to power from backup light but think it would be helpful to have always live. I would put the display at the top of the rear window so you can see in the rear view mirror.

On my car I installed a frensel lens there to see behind me for parking and it's very natural to look there.

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