I have a screen with a 2.5mm jack input into the AV in. This is how it connects to the rear camera and provides power to a camera.However, I want (need to) install a different type of camera which has the RCA yellow connector type.I have 2 options as I see it1. Buy a 2.5mm to RCA converter. I did this, it doesn't work (power was already supplied to camera)2. Cut wires and join them (as below)Before, I do this, does anyone know what the wires inside the 4pin camera cable are?Live, ground, video and audio?Can I just plug the 2.5mm jack into the screen - cut the 4pin wire connector off. Cut one side off the RCA video lead and join it to 4pin wire, and plug the other end with the RCA into the camera?Power to the camera isn't a problem. I can either send it down the wire, or more simply supply power to the camera at the rear with reverse lights like I already did.I assumed this would be easy information to find, but I can't find it online anywhere.so hoping someone can tell me before I cut this 4pin wire and maybe mess it up.
>>2885272The RCA carries signal and ground, the other 2 wires are presumably 12DC positive and 12VDC negative. Alternate could be video signal, audio signal, 12VDC + and common ground. The ground will usually be the one that connects to the first segment of the 2.5mm jack (the one closest to insulation).So yes, you can cut the 4pin and then try out the pins with the RCA signal.
>>2885274Thanks, seems logical.One other consideration. I forgot one major thing which was confusing me. The 4pin wire connector also has a trailing red wire which forces the screen to switch to the reverse channel when it gets power. So actually there is a 5th wire, which overrides the 12DC positive.As technically the camera is always on with the 4 wire set up and this screen combo
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>>2885272>>2885274why would a car reversing screen have audio.most sensible to me would be battery +/battery -/video signal/video shield.but it could be anything.you already tried a different cable and it didnt work so you know there isnt a fixed standard to this kind of chinese tat. but you obviously think people here have a crystal ball because you dont even link to a product or even a small clue.so what do you want? some guesses? thats all you'll get.
depends on the protocol the head unit supports and the camera outputs. you could have a camera that's not supported. CVBS, or even PAL to NTSC incompatibilities. Sometimes this just isn't plug and play.
