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7 pin trailer hookup question?
I am using the 12v aux power and the ground for a backup camera. But I want a way to make the camera ON all the time. It is a wireless camera, and the only 2 power sources are for the 2 pieces. I am not understanding HOW the device knows when I am in reverse, and how to override that feature so the camera is always on. I tested the 12v aux while the car was in park, and it had power, so I know I have the correct wire, but somehow the camera knows when the car is in reverse. How?
3 Answers
- keerokLv 72 years ago
I'm guessing it has a swinging electronic switch similar to that of a pedometer. As you move backward, the switch (can be as simple as a tiny pendulum or metal ball) that moves forward and turns on the camera's power. As to how it stays on for how long may depend on how it was programmed but that same switch can be made to cut off power once you move forward.
- Robert JLv 72 years ago
If it's a UK standard 7 pin socket, there is no permanent power (that needs a second socket or the newer 13 pin socket) - presumably you are using the feed to the reversing lamps.
If it's the US standard 7 pin, that should have a permanent feed, but also a reversing light feed.
You may be on the wrong pin, or the installer did not connect a permanent feed - all the others could be from the vehicle rear lights while the 12V feed needs a new cable running, if the manufacturer did not include it.
- ?Lv 72 years ago
If that is a factory camera it knows you are in reverse because there is some type of switch inside the transmission or shifter assembly.
If I were you I would just install a second camera and screen for this purpose. That way you are not messing with the factory wiring of your vehicle. They are pretty cheap: