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Installing a pioneer AVH1300-nex. Everything works except the backup camera display is black. When I put it in reverse the H/U switches to backup camera mode and it says “image may be reversed” and shows the parking assist lines. I move the gear selector either way and the H/U goes back to regular mode. I know the camera works when i put it in reverse because I have a separate video monitor it displays on. It turns on when I select reverse and off when I select another gear. -head unit works -camera works -reverse triggers a backup screen -screen is black with warning message -backup lines show -hooked into brown port “r/c in”
Try testing the camer’s power connections. Maybe when you tested the camera using the separate monitor, the camera was getting a different power connection or source. Put the car in reverse, make sure the H/U is showing the backup screen, then check the camera’s power (at the camera) to make sure it’s getting 12V. You can also try connecting the camera to constant power instead of switched power temporarily. Some Pioneer head units run a video signal input check when they’re first turned on. If no camera signal is present, it might cause problems. Also see if there is a camera power connection on the Pioneer H/U. It might be necessary to power the camera from the H/U instead of elsewhere (such as tapping into reverse lights).
Another cause of the camera stopped working could be that your battery is low and the radio unit sets back to default (camera off). In which case you’ll need to go to settings and switch camera on.
Solved. I came across this thread when troubleshooting my AVH-1300nex after installing my backup camera. Initially I spliced the camera power into the reverse light power, as well as the ground cables. I used the AV cable that came with the unit which had an additional red line. I hooked the red line to the reverse light and the other end into the head units reverse signal input line, and the RCA plug into the RCin port. The result was the head unit displayed the camera all times EXCEPT when I reversed. I ended up having to wire up a relay that disconnected power when in reverse and had power enabled in all other gears with the relay wiring as such: 85 - ground 86 - red line connected to reverse light 87 - unconnected and protected from grounding out against anything 87a - H/U power cable 30 - reverse signal input This worked for me, hopefully it helps someone else, ask if you have any questions.
