More than likely you have a camera controller which may have a loose trigger wire or the controller could may have gone bad.
Here is a link to the controller that is installed in my Challenger.
Voyager Multi-Camera Controller
If installed it will be listed on your build sheet from Thor.
Not sure about your model, but on my Challenger I remove 4 Phillips head screws and remove the top of the dash to get to the controller.
It is hard to see but in the attached photo the camera controller is the item with the white label at about 10 o-clock in the opening.
Thor Forums
