Discuss Wi-fi reversing camera in the Auto Electrician Forum area at ElectriciansForums.net

littlespark

littlespark

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Bought one of these things thinking it would be simpler than running a signal line from the back of the van.

The instruction are written in translated Chinese, and my “Chinglish” isn’t so good.

So I’ve got a red, yellow and black wire at the camera. Connected red and black to + and - of reversing light. Yellow is not attached to anything.
With ignition on(but engine not running) I get the image on my iPad, which I’m going to be using as the screen. As soon as I start the engine, the Wi-fi is disrupted and I lose signal.

I’m thinking the red needs power all the time, and the yellow is the signal that I’m reversing. But it works when stationary, why not when moving??

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littlespark

littlespark

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I posted photos of the instructions.
Thinking it over in my head, when I turn the key to start the engine, there’s a momentary cut in power to the reversing lights... enough to disrupt the power to the cam, and therefor the Wi-fi.
Thinking some interference? But it’s at the wrong end of the van to be affected by moving engine parts
 
DPG

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Maybe yellow is to trigger it from the reversing light feed. Where's page 4?
 
Spoon

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Where's page 4?
Isn't page 4 the first pic, top? Begins with "12V+ positive,"...
I'm presuming the manual is 1 sheet. The bottom pic is the reverse side of the top pic.
 
littlespark

littlespark

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Pages 4,1,2,3. It’s a double sided paper folded in half to make a book.

yes. Yellow says it’s reversing signal, so how does it work without this connected?

but only works when engine isn’t running

I might try connecting both red and yellow to reversing lamp +ve
 
DPG

DPG

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Isn't page 4 the first pic, top? Begins with "12V+ positive,"...
I'm presuming the manual is 1 sheet. The bottom pic is the reverse side of the top pic.
Strange, I couldn't see that earlier!
 
littlespark

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Bad photo. The 4 and the 1 aren’t showing
 
DPG

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Bad photo. The 4 and the 1 aren’t showing
I couldn't even see both pages earlier. Not sure why.

Anyway, I would definitely try connecting both yellow and red to +12V. Worth a go. What about a large value electrolytic capacitor right at the camera end of the supply cables?
 
kropaske

kropaske

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I think you need red as +12V, black GND and yellow to reverse light +12V
 
telectrix

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i powered my rev. cam from the rear screen demister, so that i could see behing even when not reversing. this means that any muppet runs into back of me gets on candid camera.
 
littlespark

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My van doesn’t have a rear window, so no rear demister. Although my old van, the van was powered all the time direct from the screen on the dash.

ok.... the only permanent power at the rear is the central locking.
I have driving lamps at front on all the time, but nothing at rear. I suppose I could power from headlights/ taillights, and only reverse with lights on??
Not even a 12v socket in back.
Maybe get a feed from the ceiling lights in the back?
 
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