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Old 01-01-2017, 11:20 PM   #9
KaeZoo

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If there's a red lead coming from the camera's video plug at the head unit end, it's probably connected to the power wire at the camera. If you've already connected the camera power in the rear of the vehicle, it's a bad idea to connect the red wire at the head unit end to anything. Cameras are wired like this to give you the option to connect power at the rear, or at the front--you'd use one or the other, not both.

Anyway, if you're seeing a picture, then it doesn't sound like the camera power connection is a problem. The head unit's reverse input is what prompts the head unit to switch to the rear camera feed when you shift into reverse. If the head unit switches to the camera feed, and you don't see anything, that might indicate a problem with the camera power. If it's not shifting to the camera feed when you shift into reverse, though, it most likely means the Crux interface isn't consistently sending voltage to that wire at the right time. If so, the best fix is probably to connect directly to the vehicle wire rather than the interface.
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