A modern car is impossible to imagine without driver assistance systems, and one of the most popular is a rear-view camera. Many car owners prefer not to buy expensive multimedia complexes with a screen, but to use a bundle of DVR and a separate one. rear-viewThis allows for significant budget savings. This approach requires a competent approach to installation, since it is necessary to covertly wiring through the entire cabin and correctly connect power to the onboard network.
The installation process may seem complicated only at first glance, but with basic skills of working with the tool and understanding the principles of work. 12-volt The problem of the car’s electric grid becomes quite feasible in a garage. The main thing is to be careful when disassembling plastic panels and carefully insulate all connections to avoid oxidation or short circuit in the future.
In this article, we will discuss in detail all stages of installation, from the selection of the installation site to the final setup of the DVR. You will learn how to choose the right wires, where it is better to crash into the wiring of lights and what nuances exist when you are in the middle of the road. cable-laying through the various elements of the body. Accurately following the instructions will help you avoid common mistakes and get a quality picture when parking.
Necessary tools and preparation for installation
Before starting any work on modernization of the electric car, it is necessary to prepare working tools and consumables. Lack of the necessary devices can delay the process indefinitely or, worse, lead to damage to the interior elements. The main tool for removing plastic skins is a set of plastic blades that do not scratch the surface, unlike metal screwdrivers.
To ensure reliable connection of wires you will need a soldering iron or high-quality crimping mites, as well as thermal shrinkage of various diameters. The use of simple twists in the car is strongly not recommended, as vibrations and temperature changes will quickly destroy the contact. Also stock up on high quality insulation, screeds for fixing harnesses and a multimeter to check the voltage.
- 🛠️ A set of tools for disassembling the cabin (plastic blades, end keys).
- ⚡ Multimeter or control lamp to search for a plus wire.
- 🧵 Corrugated tube or cable channel to protect the wiring.
- 🔌 Solding iron, solder, flux and shrink tubes.
An important stage of preparation is the choice of the location of the cable. Most cars have a technological channel along the rapids or under the ceiling upholstery. Examine your car’s circuitry in advance to understand where the main wiring harnesses are, and make sure the cable lengths that come with the camera are enough for the entire journey from the trunk to the windshield.
☑️ Preparation for installation
Selection of installation location and dismantling of cabin elements
The first step in the installation process is the physical installation of the camera itself on the body of the car. Most often, the rear-view camera is integrated into the plateau of the license plate illumination or a hole is drilled in the bumper above the number. The first option looks more aesthetically pleasing and does not require additional holes, but may require the purchase of a special adapter-frame for your car model.
If you choose the option with drilling, it is critically important to correctly calculate the installation point so that the viewing angle is optimal. The camera should not “see” the bumper, but should capture the extreme points of the dimensions of the car. Before drilling, be sure to attach the camera to the installation site, assess the viewing angle through the screen and make sure that the lens will not be splashed with dirt from under the wheels.
⚠️ Note: When drilling a hole in a bumper, use a limiter drill or control depth manually so as not to damage the internal amplifiers or wiring running inside the bumper.
To access the internal panels of the trunk and the threshold will require partial disassembly of the cabin. Carefully remove the plastic linings of the thresholds, snapping the locks with a plastic spatula. Some cars may require removing part of the torpedo or side panels to get to the place of the insertion into the DVR wiring. All the clips and screws taken, put them in a separate container so as not to lose them.
Lubricate plastic clips with silicone lubrication before installing them back – this will prevent the appearance of creaks in the cabin in the future.
Connection scheme and signal wire search
The most important step is the electrical connection. A rear-view camera usually has two wires: black (minus, mass) and yellow (plus, video signal). The sub-wire can be attached to any unpainted metal body element in the trunk, providing good contact. The plus wire must be connected to the power wire of the reversing lamp.
To find the right wire, turn on the ignition and rear gear (the car must stand on the handheld). With the help of a multimeter in the voltage measurement mode, find the wire on which it appears 12 volts. only when the rear gear is turned on. It is to connect to it that the camera is activated automatically when you start moving back.
A standard connector is used to connect the video recorder. RCA (Tulip) or mini-Jack, depending on the model of the recorder. The signal wire from the camera is connected to the corresponding input on the cable going to the head unit. It is important not to confuse polarity, although modern systems often have protection, but it is better to recheck the circuit in the instructions for a particular model.
| Color of camera wire | Function | Where to plug in | Tension. |
|---|---|---|---|
| Red. | Nutrition (+) | Plus a reversing light. | 12 V (rearing only) |
| Black. | Mass (-) | Body of the car | 0 In |
| Yellow (RCA) | Video signal | CAM IN entrance on the registrar | Low-level signal |
| Blue (opts.) | Management | Not used/Grounded | - |
After connecting all the wires, be sure to check the system's operability before the final assembly of the cabin. Turn on ignition and rear gear - an image should appear on the DVR screen. If the picture is missing or black and white, check the reliability of contacts and the correctness of the mass connection.
Laying cable through the entire interior of the car
Laying a long cable from the trunk to the windshield requires patience and accuracy. The cable shall not dangle or interfere with the operation of the seating arrangements and seat belts. The optimal path most often lies under the floor lining along the rapids, and then under the ceiling upholstery (torpedo) to the place of installation of the DVR.
When laying under the floor carpet, make sure that the wire does not fall under the pedals or guide seats. In places where the cable passes through metal sills or racks, use rubber seals or corrugated so that the vibrations of the body do not rub the insulation. This is a critical time for fire safety.
- 🚗 Carefully bend the rubber seals of the doorways to lay the wire underneath them.
- 🔌 Use a thin wire or special hood for complex areas.
- 🛡️ Be sure to hide the cable under the factory upholstery of the ceiling to avoid sagging.
⚠️ Warning: Never lay wires in close proximity to moving parts (windows, seat belts) without additional protection, otherwise rubbed insulation will lead to short circuit.
If the length of the regular cable is not enough, it can be increased using a high-quality shielded cable for a video signal. A conventional wire can cause interference, especially if power cables pass nearby. Make sure to solder and isolate the joints with heat shrinkage, avoiding the use of twists.
What to do if the cable is too short?
If the standard cable is not enough, you can buy an RCA extension cord or make it yourself from a coaxial cable with a wave resistance of 75 Ohms. It is important to use shielded wire to avoid ripples and interference in the image. It is better to splice by soldering with subsequent insulation by thermal shrinkage.
Configuring the video recorder and testing the system
After physical installation and connection, the program configuration stage begins. Many modern DVRs require the activation of the “Rear View Camera” function in the settings menu. Go to the section. Settings → System → Rear-view camera and select "On" or "Auto."
You should also pay attention to the parking lines. They help you navigate when parking, but can block your view if you are incorrectly configured. Depending on the recorder model, the lines can be static or dynamic (changing the angle when turning the steering wheel if the speed sensor is connected). To begin with, it is recommended to install static lines, calibrating them according to the real dimensions of the car on a level ground.
Check the quality of the image at different times of the day. At night, additional room lighting or camera exposure adjustment may be required to prevent headlights from “lighting up” the picture. If the image is shaking or has ripples, check the quality of the mass connection - often the problem lies in poor contact with the body.
Image quality directly depends on the reliability of the mass and the absence of interference in the onboard network, so use shielded cables and high-quality connectors.
Common Errors and How to Resolve Them
In the process of self-installation, beginners often make a number of typical errors that lead to unstable operation of the system. One of the most common is connecting the camera power to a permanent plus, rather than to the reverse wire. In this case, the camera will work constantly, which can lead to its overheating and battery discharge, and the DVR will not switch to parking mode automatically.
Another common problem is poor insulation of the twists in the trunk, where moisture accumulates. Even if you used the tape, it can peel off over time. Use heat shrinkage with adhesive layer for tightness. Also make sure that the cable does not clamped when assembling plastic panels.
- ❌ Lack of safety lock in the power supply chain (risk of fire in a short circuit).
- ❌ Use of unshielded cable (interference from generator and candles).
- ❌ Incorrect calibration of parking lines (false representation of dimensions).
If the camera does not turn on after installation, check the fuse of the DVR and the integrity of the chains with a multimeter. Often the problem lies in the banal lack of contact at the place of the insertion into the wiring of the lamp. Check all connections by following the connection scheme.
Why is the image black and white or with stripes?
Black and white images or horizontal bands often indicate incompatibility of video signal standards (PAL/NTSC). Try changing the video signal standard in the registrar settings. It can also be due to poor contact in the RCA connector or the use of a cable that is too long.
FAQ: Frequently Asked Questions
Do I need to remove the battery when installing the camera?
Remove the battery completely is not necessary if you work carefully and use an isolated tool. However, for complete safety and eliminate the risk of short circuit when working with wiring in the cabin, it is recommended to throw the negative terminal before starting work.
Can I connect the camera to the dimensions, and not to the back?
Technically possible, but it makes no sense. The camera will turn on every time you turn on the lights, even as you move forward. It'll distract you from the road. Connecting to the reverse circuit provides automatic activation only at the right time.
Why does the camera show an inverted image?
Most cameras have a small switch or button (often labeled as a V-flip or H-flip) on their body to allow the image to be mirrored. If there is no switch, check the DVR settings, there may be a Mirror or Reflect function.
How to extend the life of the camera in the winter?
The main enemy of electronics in winter is temperature and moisture changes. Make sure the camera has a protection class not lower. IP67. Before washing in the cold, do not pour hot water on the chamber. It is also useful to periodically wipe the lens from the ice with a soft cloth, without using scrapers.