Replacing my reversing camera

My reversing camera has stopped working. The camera is a Parkvision reversing camera (white). The camera lead has got a jack plug. I cannot source a replacement camera, the latest version from Parkvision has a six pin socket on the end of its lead. Can anyone tell me where I might get a replacement camera. I've tried Amazon, they only supply the camera with a 6 pin socket. Can anyone supply me with contact details of Parkvision?  

I don't  know if this is any good to you but they sell Parkvision...

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Thanks Paul for your assistance.

Dave H