Old camera connection - how to connect? What's missing?

Old 07-30-18, 01:09 AM
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Exclamation Old camera connection - how to connect? What's missing?

Hi everyone,

i am new here and absolutely "green" talking about surveilance system and all the cameras. Recently we have bought a house with built in surveilance system, the outside cameras are connected throught coaxial cable (RS232 i guess? It's a pin that you have to twist a little bit to disconnect), that part is pretty clear. However there is some interior cameras mounted and disguised as motion detectors as i understand they connect through pins in the photo. There are 3 different 8 pin connectors, but only 4 wires comes in to them (2 to the first one, 1 to the second and 1 to the third). So my main question is how to connect them? What is missing? What connectors/devices should i buy?

Outside of the camera

Inside of the camera

One side of 3 different connectors

Another side of 3 different connectors

Power cable, as i understand coaxial cable is also used as power source for cameras, so this power cable should be somehow connected with these cameras? Or am i wrong and it's just dedicated for old school NVR?

If you need any additional information to solve this puzzle, please feel free to ask. Atleast it's a puzzle for me As far as i know there are 3 such cameras. Is it possible that each connector represents a different camera?
Old 07-30-18, 06:34 PM
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Welcome to the forums from across the seas.

We'll try to help you.

That 1/4 turn connector is called a BNC connector. Used for connecting 75 ohm coax video lines.

Cameras connected using a BNC connector usually have an additional cable to carry power to them. It's possible those cameras are powered thru the coax but not likely.

I see the camera in your hand. I see a lot of misc. connectors laying around. I see a blue, red, green and orange wire connected to terminal strips. Are those the four wires that are coming directly out of the camera ?

If yes..... there needs to be a two conductor power wire run to the camera and a video coax line.

That large plug shown in the picture is a power cord for possibly a power supply. The cameras run on low voltage. Usually 12vDC.

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