This is the camera controller/switch that came factory installed on my Challenger. One RCA plug into the back of the Axxerra radio for the cameras. All other camera connections (turn signal and reverse triggers) are done at the camera controller and not the radio. There may also be a wire for the rear camera microphone going into the radio as well.
Voyager Multi-Camera Controller
If this installed on yours you should be able to use any radio which allows for connecting a camera. Might want to verify the radio will allow full time viewing of the rear camera while listening to music.
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