Checked 12V power with multimeter and I get 12V definitely.
Tried removing Video Sense wire and same result. No video on reverse but Black screen with reverse camera guide lines.
Tried wiring pigtail on video rca to 12 volts and other side to female rca + wire. Got a video but not clear. Strange. Quite intermittent although wire on 12V has been firmly connected manually. It looks like i got the wiring for the video sense and shield correct since I am getting video and can see self when camera is pointed to yourself but no clear enough to be usable.
Can this still be due to grounding?