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  1. #1

    Default Back-up Camera Modification- Anyone??

    I was curious if anyone knows if the factory back-up camera can be modified to be turned on in a forward gear. I thought that if this can be done it would be a nice feature to have when towing something especially if its small. I just rented a tiller with a small trailer for a garden and all I could see was the handles on the tiller in the rearview mirror because my truck sitting up so high. I can understand gm not installing this feature due to the camera monitor being integrated in the rearview mirror. If anyone has an idea on this please let me know thanks.




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  2. #2

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    If it's anything like aftermarket backup cameras then it's just two wires -- a positive and a negative. The positive is usually tied into the reverse lights to provide power to the camera when the vehicle shifts into reverse. The OEM likely feeds it via a harness, which would be convenient.

    That's the camera side for aftermarket stuff; hopefully GM took a similar approach. The head unit side is a larger unknown since factory HU's are always a little weird. An aftermarket head unit usually ties into the reverse wire at the column, and simply switches from whatever it's displaying to the backup cam's input (usually a RCA video input on the back of the HU) to display whatever the backup cam tells it to display. I'd expect the factor HU to have a reverse wiring coming to it via the harness into which it's plugged.

    The long and short of this is that what you want to do is likely very doable. If the OEM stuff is similar to aftermarket stuff, it should be a matter of locating the positive reverse connections to the HU and the Camera ... and adding a switch that allows you to feed +12v to them both on demand. The one catch is that you need to do so in a way that doesn't also feed that +12v back (the other way) to your reverse lights and at the column!

    Note: A lot of this is speculation, but it's pretty sound speculation -- unless GM deviated wildly from how aftermarket producers do these things.

    Surreal

  3. #3
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    yeps surreal , you got it it right right, it can be done and thats the way to do it. we have done it here on a few vehicles and loaders...

  4. #4

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    Quote Originally Posted by Dirty Dog View Post
    yeps surreal , you got it it right right, it can be done and thats the way to do it. we have done it here on a few vehicles and loaders...
    Actually I'm curious -- what kind of switch do you use. A two way switch would be nicest but I don't see how it'd keep +12v from being fed back into the reverse lamps and such. You do a diode too, or what?

  5. #5
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    you put the switch on the ground side of the circuit, if you want the camera on and you are not in reverse, you need to run a separate power lead from a ign. switched lead/or always hot lead(If wanting the camera on when the vehicle is not on). and the switch on the ground side, and all will be good nothing else will be needed... You can also use this method of wiring to run your dvd player while not in park..... ooops did i say that

  6. #6

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    Quote Originally Posted by Dirty Dog View Post
    ooops did i say that
    My aftermarket DVD unit is grounded, so no secret given up, there.

    I'm still having trouble visualizing the circuit. I follow what you're saying but haven't made sense of it, yet, I guess. A diagram would help, even if stupidly rough. I'm asking because this summer I may change out my camera and wiring (not happy with its quality), and I've considered doing this to it, too. The only reason I didn't when I installed it was I wasn't quite sure how the switch should be wired...

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