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DatNewDM posted on r/cadillaclyriq2w
I got this one: https://a.co/d/0b5gILzc It fits perfectly, I think they might've used the same part as Cadillac and just modified it for their purpose. I was able to tap into the camera power leads for my radar detector as well, so no touching the actual car's electrical. Loved it. Just gotta find some switched 12v power to mount a camera in the rear window, now.