It may be possible, as long as the harness coming from the rear camera is separate from the rest of the harnesses, and 2 there is a standard 2 wire input feed it is providing that you would wire into a rca male connector.
However if you are getting the rear camera that means you have the bose with nav? And if you have the bose with nav you can not change the head unit. Unless they are now offering the reverse camera as a separate screen.
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