i have Sierra Denail 2011 with Navigation Radio, i decieded to add Back Camera but i found problem. when i put the gear in Reverse mode the Navigation Radio doesn't go dark. that'* mean i can't fix the Camera.


is there any possible to add a camera with this Navigation Radio?

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What kind of head unit do you have? What kind of camera?

I know a company called oemautopartsco.com sells aftermarket backup cameras. They may have what you're looking for. Very knowledgeable staff from my experience buying a replacement unit through them. Hope this helps.