Connecting a car alarm to the lock is a time-consuming and difficult process, which is recommended to be carried out in a car service. Having a desire and having read this instruction, it is quite possible to do it yourself. A weighty argument in favor of personally connecting a security device to central lock is that, violating the installation algorithm adopted by professionals, it becomes much more difficult to hack a car.
Varieties of elements of the central lock
Central locks have a simple structure:
- input sensors. These are lock microswitches and machine door limit switches. The microswitches determine the actual location of the central locking elements. The limit switches determine the location of the doors and send a message to the control unit.
- Executive mechanisms(also called actuators). They are DC electrical machines that are connected to the converter. Pneumatic actuator may be used.
- Control block. Acts as a transmitter of certain messages to the control units, as well as to the actuators of the trunk roof lock and to the gas tank hatch.
The scheme of the central lock in the car
Do-it-yourself car alarm connection
Security mechanisms are quickly installed in car services. Consider how to connect them yourself. This process has several parts. The result directly depends on whether you follow the instructions.
Before directly connecting the alarm to the central lock, you need to familiarize yourself with the structure of the lock itself. After that, we are looking for access points that are shown in the diagrams of instructions for using and installing the device on a vehicle. Alarms like starline a91 are universal, they are suitable for installation on cars with different types engines (turbocharged, diesel or petrol) with both automatic and manual transmissions. 
Work materials
To install the alarm you will need:
- insulating tape;
- screwdriver;
- protective LED;
- driver's door activator;
- soldering iron (with rosin and solder);
- the alarm itself.
Important! Do not start the connection without first reading the theoretical material.
Step-by-step instruction
It is worth remembering that the methods of installing the security mechanism may differ from each other (most often it depends on the manufacturer). After all the materials have been collected and all the introductory information has been read, you can begin the installation.
- Shock sensor connection. This stage is easy. The sensor is connected to the block through a switching connector with three pins (which is located on the right side from the bottom of the block body). Connect the LED indicator connector on the left side of the alarm unit housing. Connect the button to the contact located on the bottom of the alarm unit housing.
- Central locking. We connect the yellow wire and the yellow wire with a black stripe to the positive terminal of the battery (“+”). We connect the orange wire and the orange wire with a black stripe to the negative terminal of the battery (“-”). Connect both remaining white wires to the central ignition lock actuator.
- Signaling. Has 10 wires of different colors.
Video: connect the alarm
Consider their connection:
- yellow wire(uppermost) connect to the contacts of the relay power coil. Normally closed contacts of this relay are inserted into the place of the break in the power supply circuit of the ignition coil. You need to cut the cable that connects the relay power coil and the ignition switch. The ends formed after cutting must be connected to two relay contacts (green wires). Then, connect the wiring coming from the ignition switch to another contact of the relay coil;
- black wire you need to connect to the negative terminal of the battery (the orange and orange-black wires from the central lock are also connected to it);
Important! It is necessary to disconnect the battery for the period of connection, so as not to damage the electrical wiring of the vehicle.
- both wires are brown connect to the turn signals (the first to the right side, the second, respectively, to the left);
- the wire Pink colour connect to the siren (to its red wire). The black cable of the siren is connected to the housing or to the negative pole of the battery;
- red wiring connect to the positive terminal. The yellow and yellow-black wires of the central lock must be connected to it;
- green wire(also called "trunk opening minus"). To be able to implement this function, you need to install an additional relay and connect this wire to its supply coil;
- orange wire connect to the brake pedal switch;
- white wire (ACC) must be connected to the ignition lock (to the contact that closes when the key is turned, and the supply voltage appears on it);
- blue wire connect to the door limit switches.
What difficulties may arise and how to overcome them
The connection process is quite time-consuming, so users may experience some problems:
- The problem of choice with a wide variety of security systems. Buyers, choosing an alarm system, first of all, should be guided by their wishes and ideas about functional features this device.
- Installation of a car alarm to the central locking system. To solve this problem, it is necessary to determine the points of connection of the security mechanism, taking into account a number of features (a type of signaling, the exclusivity of the car, the location of the central unit of the car alarm of the vehicle).
- The problem of choosing an installation scheme (color designations of various mechanisms may be intended for other functions). It is advisable to use the original diagrams for your car alarm model.
Did you know? The most expensive car in the world is the Italian sports car Lamborghini Veneno Roadster, worth $4.5 million.
Connection diagrams
We present a universal connection scheme. 
Wiring diagram Despite the rather time-consuming process of installing a car alarm with your own hands, the efforts spent will not be in vain, because this will save a good amount of money (most often, the cost of professional services is equal to the price of the alarm kit itself).
Did you know?The most stolen cars in the world are brandsMercedes-Benz (C-Class), BMW 3, Infinity (G-series).
In addition, it will bring a lot of pleasure to those who like to do everything with their own hands.
All modern cars are equipped with emergency warning lights, which cannot be said about older cars. For example, this article will focus on the legendary Russian "Kopeyka" - VAZ 2101. Since these cars are not equipped with a light signaling, car owners have to install it on their own. What is the connection scheme for the emergency gang on the VAZ 2101 and how to carry out this task correctly - read on.
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Purpose and functions of the alarm
An emergency on the VAZ 2101 is used to notify other participants traffic that the vehicle was forced to stop due to a malfunction. In accordance with the rules of the road, in the event of a car breakdown, in some cases the driver is required not only to turn on the emergency gang, but also to put up the appropriate sign. Moreover, it must be set at a certain distance from the car - this issue is regulated by traffic rules.
Installation and configuration instructions
Installing an emergency gang on a VAZ 2101 is not really difficult task almost anyone can handle it. To properly connect an emergency gang to the VAZ 2101 with your own hands, you need to prepare everything that you may need to complete the task.
A set of tools and materials
So, what you need to prepare before you start the process:
- Locksmith tools, including wrenches, screwdrivers, pliers, etc.
- Insulating tape.
- A four-contact light signaling relay from the Six.
- Six pin activation button.
- Five meters of mounting wire (video by Alex Gordon).
Algorithm for doing work
So, let's start the process:
- First you need to dismantle the center console. To do this, unscrew the bolts that secure the trim to the steering column. You will also need to remove the side windshield pillars.
- Having done this, you can remove the instrument cluster. Be careful not to damage the device.
- Next, disconnect the wires from the light bulb that illuminates the glove box. Then remove the bolts that secure the sides of the glove box to the control panel, as well as the bolts that fix the bottom of it. Having unscrewed all the screws, the glove box itself can be dismantled.
- Now you need to remove the screws that secure the bottom of the dashboard to the front cross member. Then the nuts of the upper fastening are unscrewed, it is best to get to them through the technological openings of the glove box.
- After completing these steps, you can dismantle the handles from the stove control panel. To do this, at the junction of the lever with the handle, use a screwdriver to bend the lower part of the top handle, and at the bottom handle, you need to bend the top.
- Next, you need to disconnect the connectors with wires from the switches for the backlight of the control panel, side lights, and also the stove. Then wrench you need to unscrew two more bolts that fix the fastenings of the stove control levers. By following these steps, you will be able to dismantle the control panel.
- Now we proceed directly to the installation and connection of the main elements. First, decide on the mounting location of the system power button. It should be mounted on the center console so that the driver can reach it as quickly as possible if necessary. It is still too early to put the button, but you need to decide on the installation site right now, since it will depend on how much wire you need. Now remove the old turn signal relay from the car and disconnect three cables from it - they are usually colored black, gray-white and orange.
- Next, take a new six-wheel relay. The second contact of the relay must be connected to the wire that was removed from the L contact on the turn signal relay, as well as to the output 7 of the button.
- The first contact of the relay must be connected to the fourth contact on the button itself. The third contact is connected to the cable disconnected from the P contact on the turn signal relay. Then you need to connect the cable from the fourth contact to the mass, that is, the vehicle body - it is best to connect it to the relay fixing nut.
- The next step is to connect the button itself. The fourth contact of the button should be connected to the first contact of the relay being used. Its second contact must be connected to the cable that was disconnected from the positive contact of the rotary relay. The seventh contact is connected to the second contact of the relay, and the first and third contacts are connected to the turn signal stalk switch, in this case the order of connection does not matter.
- Now you just have to connect the eighth pin to any positive cable, as an option, you can wedge yourself into the electrical circuit from the cigarette lighter. In the event that you decide to connect the plus directly to the battery or generator unit, then the circuit will need to be protected with a fuse.
- This completes the installation procedure. You just have to securely fix the wiring to prevent the cables from chafing. Reinstall all previously removed interior trim, center console, glove compartment, etc.
Each car owner tries to protect his vehicle from theft as reliably as possible. One solution in this case is to install a car alarm. Most car enthusiasts prefer to pay money to the installer to be sure of the quality of the installation of the system, but sometimes people put alarms on their cars on their own. What is the wiring diagram and how to make self-installation- read below.
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Tools and materials
To properly connect the alarm to your car, you will need the following tool:
- locksmith tools;
- stationery knife;
- heat shrink tubing for insulation;
- tester (multimeter);
- Double-sided tape;
- vehicle wiring diagram.
Photo 3. Locksmith tools 
Connection instructions
The anti-theft system should also come with an alarm connection diagram, it must also be saved. You can find out more about how to install a car alarm with your own hands below.
We mount equipment
First you need to study the instructions that come with the anti-theft system, it will also not be superfluous to understand the electrical circuit of the machine. Next, you will need to determine the installation location of the control unit, as well as the siren itself. The block itself is best installed in the most inaccessible place for a potential attacker - under the dashboard.
As for the siren, it is usually installed in the engine compartment, but in the engine compartment of any car there are only a few places where you can put the siren. Please note - the more difficult it will be to get to the siren, the more difficult it will be to turn it off if necessary. It should also be taken into account that this component should not be affected by moisture and high temperatures, so it is better to put it away from the engine itself.
We connect to the mains
How to connect the alarm with your own hands? In order for the installed and configured system to work for a long time, it is important to connect it correctly. In particular, the outputs of the installation must be connected to the turn signals or to the dimensions, to the limit switches that are responsible for opening and closing the doors, as well as to the indicator of the running engine.
In the event that the control panel in your car is optotronic, then you can only connect the system to the turn signals. To do this, find the indicator lights on the tidy that provide turn signal activation, a track is marked on the corresponding diagram. You need to turn on the turn signal and connect a multimeter to it - if there is voltage, then you have found the correct wire.
Connection to the door limit switches is mandatory, because otherwise the signaling will not respond to their opening and after some time it will arm the car again. In a similar way, the wiring is searched for, which ensures the opening and closing of car doors. If the door is closed, the multimeter should show 0 volts, if it is open - 12. As for the engine start cable, it is also searched for, but if in your case this option is performed by a tachometer, then it will not work to check it with a multimeter. The control unit of the device must also be connected to the central lock, for this it is best to use the lock enable relay (the author of the video is Sergey Zukol).
Laying the wiring
When laying the car alarm wiring in a car with or without an immobilizer, you need to collect all the cables in the directions and fix with electrical tape. Thanks to the use of electrical tape in case of possible theft, it will be difficult for intruders to find the wire necessary for cutting. Moreover, the electrical tape also performs the additional function of insulation, thus ensuring the reliability of the wiring.
When connecting cables to the alarm with or without an immobilizer, the wiring should be soldered, while using heat shrink tubing for insulation. After the tremotube, the connector can be wrapped with electrical tape. Special clamps can be used for proper connection, but this option is less secure. When laying cables in the engine compartment, it is necessary to use existing wiring harnesses to make the wiring from the signaling less noticeable.
On cars with an immobilizer and glass closers, the system must be connected to these elements as well. Connecting a door closer is important because this feature will automatically close the windows when the car is armed. The use of a closer is possible only on electric windows (the author is the Mighty Car Mods channel in Russian from BMIRussian).
We block the power plant
Installation of an anti-theft system should include blocking the power unit in case of illegal possession of the car. As a rule, the ignition switch connector is used for these purposes, but in order to identify the necessary contact, the device will need to ring. In particular, you need to find a cable that has voltage when the key is turned to the ON position and disappears when it is turned to the Start position. The lock connector is dismantled, after which this cable is closed with one jumper to the plus, and the other to the plus and starter. If you managed to do this, then the jumper on the starter is dismantled, after which the corresponding wire is installed and connected.
Installing and configuring the alarm
How to adjust and how to set up the alarm with your own hands:
- The hood and luggage compartment opening controllers are mounted so that they close to ground when opened. To install the first, an additional retainer may be required.
- As for the siren, it is better to install it with the horn down, this will protect the device from moisture.
- Next, you need to put the shock sensor, it should be fixed under the control panel on the screws. You need to adjust the regulator by putting the car on protection and tapping on the car body. The adjustment should be made so that the signaling does not work without a reason, but only when you try to open the door or as a result of kicking the wheel.
- As for the microwave controller, it is better to install it in the central part of the car.
- The central unit is mounted behind the injection controller or in any other hard-to-reach place.
- The final step will be the installation of the antenna - for this you need to degrease the windshield and put the antenna adapter in the middle or in the corner - from above or below. The wires will need to be hidden under the upholstery.
Video "Visual installation instructions"
How to properly install an anti-theft system - look at the video (author - Roman & Ko channel).
When buying a car, so that it is not stolen, it is advisable to immediately order the installation of a security alarm in the salon where the car is purchased. This may not give a 100% guarantee against vehicle theft, but it will definitely complicate the task of the hijacker. It is the presence of an alarm on the car, often causes thieves are reluctant to mess with it for a long time. But if you want to save money, then you need to know how to properly connect the alarm yourself.
It's possible if you understand in electrical circuits, have the skills to work with a soldering iron and the necessary set of tools. True, you will have to spend quite a lot of time installing the alarm, since you will have to disassemble all the door cards, and installing additional equipment yourself will cost the removal of the warranty from the car. Now “signals” are even put on mopeds. But how to turn off the alarm on the scooter, and not only on it, if it has failed and the car will not start?
It is for these purposes that a button with the inscription "VALET" is included in the kit of any security system. Usually, it is installed in a secret place, which only the owner of the car and the alarm installer should know about. The instructions for the "signaling" describe how to use this button to disarm manually. But there are situations that the failure of the alarm system is very serious. In this case, you need to know how to reset the alarm.
Security alarm is a mini-computer that can be restarted just like a normal personal computer. You just need to remove the positive terminal from the battery and wait 5 minutes. Then, put the terminal back in place. If the security system has not started to function in standard mode, then you can thoroughly fix the terminal on the battery. If not, then repeat the reboot procedure again. And now about how to set the alarm time. At the very beginning, you need to program the car alarm. Next, select a function, you must press the key fob button as many times as necessary. When pressed, the LED will blink.
And it happens when the system stops perceiving the key fob. How to bind the key fob to the alarm again? This can be done very simply. First, open the driver's door and disarm the car manually. Then close and open the door locks by pressing the buttons on the doors. Then, turn the ignition key to the working position, and back to the parking position (3 times back and forth with an interval of no more than 10 seconds). After that, having opened the door, block it 3 times (with correct work system, it unlocks the door within 2 seconds). Then, press the key fob button (if there is a response from the system, then the key fob is successfully linked).
Now it won't be too hard. It is enough to purchase a special device in the store, for example, Duo Digital, which is mounted on a computer monitor. This gadget monitors all movements on the monitor and transmits the necessary signals to the computer.
