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wiring back up camera


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donerite 
Member - Posts: 6
Member spacespace
Joined: January 12, 2008
Location: Ontario, Canada
Posted: January 12, 2008 at 11:48 PM / IP Logged  

I have 04 chevy avalanche and want to install vr-3 back up camera. The manual says to conect the camera to reverse light. This would mean the camera would only come on in reverse . I would like to be able to manual turn on and off camera . I know i could connect it to a toggel switch . But that would mean runing wires all the way to the fron and drilling into dash. I would like to use the switch on dash that turns on the light in bed of truck. There is only one bulb and i real dont use this light all that much . When i conected the red wire from camera to red wire just before bulb and the black wire to ground . the camera comes on . But when i turn the light off the camera still stays on. There are to wires going to bulb red and blue . When i test wire red with meter i get power . When i test blue wire when light is off i get power. I know it not like olden days when power was simple . Dont understand this . Can some help me figure this out . Is it possible what i am trying to do . Dop i need a relay or something that will make this work { remember this kind of stuff when hooking up trailer lights. need a separate box ) . Please tell as much as posible of what i need ( name or model no. ) and how to install.

Took truck all apart and wife screaming she needs truck

Thanks  From a Newby

ya boy mike 
Member - Posts: 44
Member spacespace
Joined: October 11, 2007
Location: Tennessee, United States
Posted: January 13, 2008 at 8:14 AM / IP Logged  
That is what I did to my camera. I had it come on automatically by connecting it directly to the reverse light, then when I plugged it into my head unit I just used a splitter to have it pplugged into A/V input and camera input. Worked like a charm.  wiring back up camera -- posted image.
It Hz
i am an idiot 
Platinum - Posts: 13,466
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: January 13, 2008 at 9:12 AM / IP Logged  

Your cargo light always has power going to it.  The switch grounds it.    Your reverse light is always grounded, when you put the vehicle in reverse it supplies power to the light and the camera.    If you want to use that switch to power the camera you will have to use a relay.

Turn the light on and check voltage on the 2 wires again.  Now only one of them will have 12Volts on it. To wire the relay you need to apply power to terminals 86 and 30.  85 needs to be connected to the wire that did not have 12 Volts on it.  Terminal 87 goes to power of your camera.

donerite 
Member - Posts: 6
Member spacespace
Joined: January 12, 2008
Location: Ontario, Canada
Posted: January 13, 2008 at 7:41 PM / IP Logged  

does the relay need to to go by the switch or can it go just before the bulb

some one say i can get 12v from trailer plug .would that help . what is the relay called and where would i get one

trying not to run wires allthe way to front if possible

thanks

i am an idiot 
Platinum - Posts: 13,466
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: January 13, 2008 at 8:05 PM / IP Logged  
It can go near the bulb.  All of the wires you need are located at the light socket.  The relay is available at any stereo shop.  Just tell them you need a Bosch (or equivelant) relay.    May also be available at autozone.

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