Security Camera Cable & Wiring

What options do I have for wiring my security system?

There are two basic approaches to hooking up security cameras and digital video recorders (DVRs). You can use Plug and Play cable or you can use RG59 Siamese cable. Both cable types combine a cable for the video and a cable for the power.

The advantage of plug and play cable is that it is very easy to use. The connectors for power, video and audio are all pre-attached. All you have to decide is what length you need (we offer 25, 65, and 100ft. models). This cable type is a good choice for homeowners who don't need a cable run longer than 100ft.

The RG59 Siamese cable is more heavily shielded so it's more durable and can be run longer distances (up to 1000 ft. without a repeater). It's heavier shielding makes it less susceptible to interference. Florescent lighting in particular can interfere with camera signals. The RG59 is purchased in 500 or 1000 ft. rolls and each camera run is cut to the exact length needed. Since you need to cut the cable and attached the connectors, it is a little more involved to install.

What Is Plug & Play Cable?

All you need to decide is what length of cable you need. Its recommended that you do not go over 100 feet with plug and play cable (or even shorter if florescent lighting is used at the installation site).

Click here to see the plug & play cables we have available on our site.

The video and audio connections on the plug and play cables are RCA male (this is typical). All of the DVRs and cameras on our site have BNC male connections. Therefore, when using plug and play cables with our cameras and DVRs you will also need to use our RCA to BNC connectors.

Note: If using the plug and play cable to connect directly to a TV you probably wont need any connectors as most TVs provide a simple RCA (female) input so the cable can plug directly into it.

What Is RG59 Siamese Cable?

RG59 Siamese cable is a heavily shielded cable which contains both the video (COAX) cable and the power cable (18 gauge 2 conductor) in one jacket. The advantages to using this cable is that its more durable, and you can run it long distances without interference. Also, you can cut each camera run for the exact length that you need. If you are using a camera with audio or a PTZ camera (which requires a data cable connection) you will need to use a special type of RG59 which includes an additional data wire in the jacket (see model CAB500D).

We have 500 ft. rolls and 1000 ft. rolls of RG59 Siamese available (click for details).

Step 1

Use a stripping tool to strip the shielding from the coax part of the cable. You can order a good quality stripping tool. In order for the connector to go on smoothly you will want about 3/4" of the center conductor showing and about the same amount of the copper wire braid showing (see figure 2).

Step 2

Make sure that none of the strands of copper wire braid touches the middle conductor wire when you twist on the BNC connector. If they accidentally touch, this will not damage the camera but can result in a black (shorted out) image from the camera.

Step 3

Twist on the BNC Connector onto the wire until it is snug. You will repeat Steps 1 - 3 for the DVR end of the COAX cable as well as the camera end (see figure 5).

Step 4

Cut the wire on the camera power supply about 6 to 12 inches from the camera connector. Strip back the wire (on both parts) 1/2 inch or so to expose the white (positive) and black (ground) wires.

Step 5

Using wire nuts, connect the white wire of the power supply to the red wire of the RG59 2 conductor, and the black (ground) wire of the power supply to the black wire of the 2 conductor.

The diagram on the right is an overview of the process required to use RG59 cable for camera installations.

Connector Overview

Preferred Solution

On the camera end, a preferred method is to use a PWRADT 2.1mm pigtail connector (see below). This provides a cleaner connection on the camera end. You simply use pliers to crimp down the power wires to the connector, and the other end plugs into the camera.

On the DVR end, a preferred method is to use one of our professional power boxes. The power box is usually installed near the DVR. The 2 conductor power wires from the RG59 will connect directly to the power box. This method is recommended because the installation is cleaner and more robust.

Connector Overview
Posted in Articles, CCTV FAQs, Introductions & Overviews and tagged , .


  1. I think your security cable/wire connectiions ‘how to’ article was one of the best I’ve come across yet. Very well put together, easy to read,understand, and only shows what you’re looking for. I’m glad I found your web-site!! Thank you.

  2. Chris,

    I just installed security gates at the entrance to my property. I have an electric gate opener, keypad and 2 “clickers”.

    The gate is solar powered with a 110V back up.

    I also ran a Siamese RG 59U / 18 ga , 2 conductor cable from the gate to my house with the intention of installing a security camera at gate and dvr at house. Since I have 110 available at the camera location, and don’t really need the power through the Siamese cable, what are my options with the 2 conductors in the Siamese cable? Can I use one of them to control a PTZ camera? Can I use one of them to install an intercom or some other new high tech gadget? What type of camera should I install?

    I also have the phone line that comes to my house near the gate………..can I use it for something?

    I would certainly like your input !!!


    Ron Slack

  3. The siamese cable is great for a camera. If you have a reliable source of power at the gate you can use it for the 12v power supply for the camera. That does leave you a spare pair. The spare pair could be used for anything needing a standard speed pair of wires including a PTZ data pair, phone, speaker, or anything else that meets that criteria.

    For a camera there are different solutions. I have infrared, PTZ, domes, and bullets.

    As far as the phone line; there are plenty of intercom systems that can use that. You would have to shop around to make sure that the number of pairs you have will run the equipment.

    I hope this is helpful. Please feel free to give me a call and I will discuss it further.

  4. Hi Ron,
    Chris is out on vacation and may not be able to respond for a few days so I’ll do my best to answer your question. RS485 is a communication standard designed to transmit data between two electrical devices. The RS485 connector is used to communicate control instructions (pan, tilt, zoom) from a DVR or joystick to a PTZ camera. Not all DVRs support this connection so make sure your DVR says PTZ control or RS485 output.

  5. Thanks Maureen !!!!!!!

    One more question:

    Can a Wi Fi adapter be plugged in to the USB or LAN port of a DVR so the DVR can be connected to my home computer / internet. If so how do you know which adapter to buy ? I have a D-Link wireless router for my computer.

  6. I too would like to know if a WiFi adapter can be used to connect to my LAN at home instead of running the rg46 wire from the dvr to the port on the back of my router? I also have a D-Link system DIR615
    Than you I have gained a lot from reading and veiwing the info on your site.

  7. Your responses to the questions on cabling as really helped me to resolve some of the issues i have on cables connections. Thank you.

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