Cables and connections need to be protected from the elements or camera failure can result. If you cannot drill a hole directly behind the camera for the wiring, your best bet is to use a junction box and conduit to protect the wiring. To protect the socket from moisture it is best to use dielectric grease. Make sure that your weather-resistant connector is firmly tightened and sealed with silicone or electrical tape. Water damage in connections is not covered under warranty.
For more info on this, we have this Blog Post or a video on cable basics below the image provided.
Still have questions? Contact us.