backup cam

I’m not sure what to post this under, but I suppose I’ll start here. I have a 2011 Hyundai Genesis Sedan (4.6 L V8). Yesterday by battery died on me so I replaced it. Now my car won’t let me see the backup camera. It just stays on the map section and will not go into the camera view when in...

My backup camera is showing a black screen or occasionally horizontal gray lines briefly before going all black again. I took to dealer and they say it’s the harness. We checked continuity of harness at the trunk and all appears good. We tested for power at camera, but it was only for 6.7...