They are designed to only work with the stock nav, so I don't think that's going to be a problem, there's a switch that checks to make sure you're in reverse and then the screen automatically shows the rear-view camera's view and goes back to normal when you shift out of reverse... If all the G35/37s have it I don't see why it won't work with our system, our Navs are identical to the G37 as far as I know.
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