Do-it-yourself repair of electrical equipment VAZ 2105

In detail: do-it-yourself repair of electrical equipment of a VAZ 2105 from a real master for the site my.housecope.com.

Some useful wiring diagrams for VAZ 2105 1980-1992 Model VAZ-2105 its design was almost in line with the European fashion of the early 1980s. This allowed the model to be sold in a number of European countries for many more years. Although in Europe, such rear-wheel drive four-door five-seater sedans already in the 70s began to surrender their positions to front-wheel drive models. Since its inception (and now even more so), this classic sedan has not become prestigious for many car owners and, accordingly, has not become the most massive product of AvtoVAZ. This did not prevent him from being considered the most progressive design until the appearance of front-wheel drive VAZs. Externally, the car received straightened body design lines, large rectangular headlights in front and rear, aluminum bumpers, fenders of then fashionable cut contours, a camshaft drive with a belt, and not with the usual chain. The ventilation system differs from the previous ones by the presence of rectangular deflectors. Heated rear window as standard! The fuse and relay box is located in the engine compartment.

The main wiring diagram of the VAZ-2105

The main electrical diagram of the VAZ-2104

Wiring diagram of the injection system

1 - fan motor
engine cooling systems:
2 - mounting block;
3 - idle speed regulator;
4 - electronic control unit;
5 - octane potentiometer;
6 - spark plugs;
7 - ignition module;
8 - crankshaft position sensor;
9 - electric petrol pump with fuel level sensor;
10 - tachometer;
11 - control lamp "CHECK ENGINE";
12 - vehicle ignition relay;
13 - speed sensor;
14 - diagnostics block;
15 - nozzle;
16 - adsorber purge valve;
17, 18, 19 - fuses for the injection system; 20 - ignition relay of the injection system;
21 - relay for turning on the electric fuel pump;
22 - inlet pipe electric heater relay;
23 - electric heater of the inlet pipe;
24 - fuse for the inlet pipe heater;
25 - oxygen concentration sensor;
26 - coolant temperature sensor;
27 - throttle position sensor;
28 - air temperature sensor;
29 - absolute pressure sensor;
A - to the "plus" terminal of the storage battery;
В - to terminal "15" of the ignition switch;
P4 - relay for turning on the fan motor

Video (click to play).

Electronic wiring diagram of the instrument cluster

1 - sensor of the control lamp of oil pressure;
2 - gauge for the coolant temperature gauge;
3 - mounting block;
4 - ignition relay; 5 - ignition switch;
6 - fuel level indicator sensor;
7 - instrument cluster;
A - to terminal "30" of the generator;
B - to the instrument lighting switch

Brake system warning lamp connection - diagram

1 - brake fluid level sensor;
2 - mounting block;
3 - ignition relay;
4 - ignition switch;
5 - control lamp for brake fluid level; 6 - control lamp of the parking brake;
7 - relay-interrupter of the parking brake warning lamp;
8 - parking brake warning lamp switch;
A - to the terminal "30" of the generator

Turning on the headlight washers and cleaners - wiring diagram

1 - gear motors of headlight cleaners;
2 - headlight washer electric motor;
3 - mounting block;
4 - ignition switch;
5 - windshield washer switch in the three-lever switch (at the same time it is the headlight washer switch); P2 - relay for switching on the cleaners and headlight washer;
A - the order of the conditional numbering of the plugs in the headlight wiper pads;
B - to the terminal "30" of the generator

Wiring diagram for turning on the heater fan motor

1 - mounting block;
2 - heater electric motor switch;
3 - additional resistor; 4 - heater electric motor;
5 - ignition switch;
A - to the terminal "30" of the generator

Electronic circuit for switching on the windshield wiper and washer

1 - thermobimetallic fuse;
2 - gear motor of the windshield wiper;
3 - windshield washer electric motor;
4 - mounting block;
5 - washer switch in a three-lever switch; 6 - switch of the cleaner in the three-lever switch;
7 - windscreen wiper relay;
8 - ignition switch;
A - to the terminal "30" of the generator;
B - the order of the conditional numbering of the plugs in the pads of the motor reducer and the relay of the cleaner

Wiring diagram for turning on direction indicators and alarms on a VAZ 2105

1 - block headlights with front direction indicators;
2 - side direction indicators;
3 - mounting block;
4 - ignition relay;
5 - ignition switch;
6 - relay-interrupter of direction indicators and alarm;
7 - indicator lamp for direction indicators located in the speedometer; 8 - rear lights with direction indicator lamps;
9 - alarm switch;
10 - switch of direction indicators in a three-lever switch;
A - to the terminal "30" of the generator;
B - numbering of plugs in the alarm switch;
B - the order of the conditional numbering of the plugs in the relay-interrupter of direction indicators and alarm

VAZ-2105 ELECTRICAL SCHEMES:

- circuits protected by fuses

- commutation of ignition switch terminals

- wiring diagram of the mounting block

Non-contact ignition system diagram

2. Ignition distributor sensor

Outdoor lighting switching circuit

1. Block headlights with side light bulbs

4. Lamp for lighting a glove box

5. Instrument lighting control

6. Rear lights with side light bulbs

7. Lanterns of illumination of license plate

8. Outdoor light switch

9. Control lamp for outdoor lighting located in the speedometer

B. To instrument lighting lamps and switch illumination lamps

Diagram of the control system for the Solex type carburetor solenoid valve

1. Carburetor limit switch

3. Solenoid valve

7. Block of the wiring harness connected to the electric pneumatic valve control unit

8. Solenoid valve control unit

A. Order of conditional numbering of plugs in the control unit

Starter wiring diagram

3. Shunt coil of stator winding

5. Serial stator coil

6. Holding winding of the traction relay

7. Retraction winding of the traction relay

8. Relay of inclusion of a starter

Connection diagram of the generator system 37.3701

9. RFI suppression capacitor

11. Control lamp of a charge of the accumulator battery in a combination of devices

Connection diagram of the G-222 generator system (used until 1987)

7. RFI suppression capacitor

9. * Relay of a control lamp of a charge of the accumulator battery

11. Control lamp of a charge of the accumulator battery in a combination of devices

* The relay was used until 1985.

Relays and fuses of the mounting block type 40.3722 (a) and 2105-3722010-17 (b)

K1. Rear window heating relay

K2. Relay for turning on cleaners and headlight washers

K3. Relay for turning on horns

K4. Relay for turning on the electric motor of the fan of the engine cooling system

K5. Headlamp high beam relay

K6. Headlamp low beam relay

1. Tweezers for removing fuses

3. Spare fuses

Relays K3 and K4 are not installed on VAZ-2105 vehicles. Instead of relay K3, put a contact jumper

Mounting block type 15.3722 (cover removed)

1. Relay for turning on the heated rear window (P1)

2. Relay for turning on cleaners and headlight washers (P2)

3. Jumper at the relay installation site

4. Spare fuse

5. Relay for high beam headlights (P5)

6. Relay for dipped headlights (P6)

Fuses in the mounting block are numbered in order from left to right

Fuse-protected circuits

Windshield wiper and washer motor. Electric motors for headlight washers and washers. Windshield wiper relay. Relay

headlight washers and washers (contacts)

Direction indicators in alarm mode. Switch and relay-interrupter for direction indicators and alarm in emergency mode

Direction indicators in direction indication mode and the corresponding indicator lamp. Relay for turning on the fan motor (winding). Control

fuel reserve lamps, oil pressure, parking brake, brake fluid level. Battery charge indicator lamp. A combination of devices.

Voltmeter. Control system for the carburetor electro-pneumatic valve. Parking brake warning lamp relay.

At one time, AvtoVAZ began production of the VAZ-2104 car, a model that replaced the already outdated VAZ-2102. This car became the second and last representative of station wagons in the family of classic VAZ models.

The speed of creating the model and launching it into production was ensured by the fact that another model, the VAZ-2105, was taken as the basis. In fact, the designers simply took the "Five" and made a station wagon out of it, which received the 2104 index. Therefore, almost all the constituent elements, as well as the VAZ-2104 wiring diagram, were completely unified from 2105.

But unlike the "Five", the station wagon was produced for a rather long time - until 2009, and this car was modernized several times. The last modification was already equipped with an injection power system, which entailed the processing of the electrical circuit.

But everything is in order. Wiring diagram VAZ-2104 (carburetor) - single-wire, that is, all electrical devices are connected to each other by only one wire - "positive". The role of the minus is performed by the car body and metal components (power plant, transmission).

All devices included in the electrical equipment can be conditionally divided into several components:

Working equipment (with the help of which the start and operation of the power plant is ensured);
Light and sound alarm;
Auxiliary equipment (facilitating the operation of the car);
Devices to ensure comfort;

The working equipment includes a battery, a starter, a generator, elements of the ignition system, as well as devices with which these parts are controlled.

In this case, the battery can be attributed to almost all components, since it provides power to all car devices while the engine is not running.

But its main task is to provide power to the starter - a power electric motor, with the help of which the engine is started, as well as the ignition system. After the engine is started, the function of the battery is taken over by the generator, that is, it generates energy that powers all devices. Also, his task is to restore the charge spent by the battery for starting the motor. At the same time, in the case of a heavy load (many electrical appliances are turned on), when the generator can no longer fully power the equipment involved, the battery begins to feed the network so that the excessive load does not damage the generator.

The ignition system creates a spark charge in the engine cylinders, causing the air-fuel mixture to ignite. It includes an ignition coil, distributor (distributor), spark plugs, high voltage wires.

The main element for controlling the working equipment is the ignition switch, through which electricity is directed to the necessary working devices (ignition system, starter).

The light and sound alarm provides illumination of the roadway at night (high and low beam headlights), informs other road users about the maneuvers performed by the driver (turns, overtaking, braking, reversing), as well as information about the dimensions of the car (side lights). This also includes the horn and interior lights. All lighting devices are powered from the battery (while the engine is not running) and the generator (when the engine is running).

presented in the diagram. True, the equipment of the VAZ-2105 is shown here. It differs from the VAZ-2104 only in a different shape of the rear lamp block, otherwise everything is identical.

Scheme of light and sound alarm VAZ-2105:

I - headlight; II - side turn signal; III - rear block lights; IV - salon shade; V - license plate illumination lamp; VI - engine compartment lighting lamp; VII - diagram of switching on the headlights.

The electrical circuit of VAZ cars, in principle, is not particularly complicated, however, some malfunctions can simply confuse the car owner. In this article we will talk about the VAZ 2105 car - a schematic diagram of electrical equipment, as well as recommendations for repairing the system are also given below.

The VAZ electrical circuit consists of many components. We are talking about the generator, battery, optics, fuse boxes, warning lights, as well as the dashboard and other components. We are talking about both the injector and the carburetor engines. The system wires are marked in different colors, they correspond to those marked on the diagrams, this allows the car owner not to get confused during circuit diagnostics and repairs.

Complete wiring diagram for the domestic "five"

The very wiring diagram of the VAZ 21053 carburetor or injector as a whole gives a complete picture of the circuit, without any specifics and explanations. Accordingly, additional applications should be included in the service manual for the vehicle, explaining the purpose of electrical devices. In any case, one of the main components of the circuit is the ignition system. In general, there is nothing complicated in it, but during the repair it is easy to get confused in the wiring that goes from the relay to the fuse box and from the ignition switch to the block.

Also, the wiring system includes a wiring diagram for the dashboard and engine start. Almost all equipment of the "five" is designated by separate applications in the service manual, which greatly facilitates the repair and diagnostics procedure. For example, car owners often face the problem of incorrectly working direction indicators, as well as fog optics.

It is quite possible that the devices refuse to function normally when the generator is not working correctly. Of course, if there is a circuit, it will be much easier to detect a malfunction. It should be noted that the injection versions, in contrast to the carburetor versions, are more complex due to the presence of additional sensors and regulators, injectors and other components.

There are several types of state of the "five" electrical circuit, when car owners have to look for a malfunction:

The car cannot move. In principle, there can be many reasons for this. It can be a breakdown of certain units and mechanisms, or problems in the operation of an electrical circuit.
The machine can drive, but the electrical equipment is not functioning properly.

Dashboard connection diagram for "five"

In the event that trying to start the engine, this does not work, and gasoline enters the unit without problems, most likely, the problem must be looked for in the circuit:

As mentioned above, injection versions are more complex in terms of wiring and equipment. As practice shows, in most cases the problem lies precisely in the ICE control system. For example, if the vehicle system is unable to process signals from the regulators and, accordingly, transmit signals to auxiliary mechanisms, most likely the problem is in the circuit.
In the event that you have a carburetor "five", then first you need to diagnose spark plugs, as well as high-voltage ones. It happens that high-voltage wires are bent or contacts are oxidized on them, which leads to problems in the operation of the car. In addition, it is advisable to check the performance of the ignition coil and distributor.

In fact, on any version of the VAZ 2105, be it an injector or a carburetor, one of the main reasons for the equipment malfunctioning is contacts. They oxidize or burn, as a result of which difficulties may arise in the operation of equipment, in particular, lighting in the cabin or external optics (video by Max Rublev).

How to properly check the electrical circuit of a car:

First, diagnose the circuit from the generator to the coil. Make sure that the contacts in this area are free of oxidation, there may be breaks. If there is oxidation, then the contacts just need to be cleaned. Bad wires need to be replaced.
Check the coil is working. You need to find out if there is a spark. Take out one high-voltage wire and bring it to the metal. When trying to start the engine, a spark should jump between the cable contact and the metal. If it is not there, then it is necessary to more thoroughly diagnose the main components of the ignition system.
Also diagnose the performance of the spark plugs and distributor. Sometimes the inability to start the engine is due to the formation of carbon deposits on the candles, if this is the case, then it is necessary to get rid of the plaque. There can be many reasons for the appearance of soot, read more about them, as well as disposal options, here.

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The subtleties of repairing the electrical circuit in this car are shown in the video (video by Vitaly Zhadan).

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Electrical diagram of the car VAZ 2105

Image - DIY repair of electrical equipment VAZ 2105

The VAZ-2105 does not stand out with a too complex electrical part, however, faced with the diagnosis of a particular problem, it can take a lot of time to identify it. Many auto specialists recommend having a VAZ-21053 wiring diagram printed on a color printer. It can also be purchased ready-made, and this will be much better, since the typographic version is of higher quality and better readability. It is also worth remembering that there are two types of cars with a fuel supply system:

On the main wiring diagram of the VAZ, the location of all components of the electrical circuit is clearly indicated:

This diagram shows all the location of the wires, how they pass and what they supply. Each wire is marked with a separate color for easier reading of the circuit.

All VAZ electrical circuits have digital indicators for each device, the name of which can be found in the proposed manual.

The most important is the electric ignition circuit of the car. By itself, it is not too complicated, however, during repairs, you can get confused in the wiring and confuse the wiring going from the relay to the mounting block and from the ignition to the relay. In addition to such a diagram, a wiring plan for the instrument panel and a plan for the engine starting system may be required. Almost every type of electrical equipment of the VAZ-21053 injection system is repeated in a separate plan. This helps a lot in the renovation process. For example, the VAZ-2105 has malfunctions in the operation of turn signals or fog lights. With such a scheme, it is much easier and faster to diagnose a breakdown.

The owner of the VAZ-2105 is an injector, car repair is more difficult, since the electrical equipment is crammed with sensors, valves, nozzles and other elements. Many car owners of VAZ on injectors do not risk doing repairs on their own, so they immediately contact a car service. However, injection cars are not as difficult to repair as they might initially seem.

If the driver has a VAZ 2105 wiring diagram, then many breakdowns can be eliminated without the help of a service station. This task will take time and a diagnostic tool.Most often, diagnostics are limited to checking sensors and measuring resistance.

The biggest problem that can arise during repair work on the VAZ-2105 is the mismatch of the color of the wiring with the one indicated in the diagram. If the car is many years old, then, most likely, the wiring has been changed many times. The previous owner of the car was hardly concerned that the colors of the wiring did not match the colors in the diagram. Most likely, if the car needed urgent repair, then the first wires that came to hand were installed on it. Therefore, the new car owner will have to face difficulties and find out which wire is connected where. In this case, you can make some adjustments for yourself immediately for the future with the help of felt-tip pens. During the repair, you can paint each wire in the desired color, this can save time for the next inspection or diagnosis.

Another difficulty in repairing a VAZ-2105 that a car owner may encounter is a partial replacement of the wiring. The previous owner could have replaced only part of the wires, thus giving the current owner a lot of trouble. This situation causes even more confusion, and in this case it will be more reasonable to simply replace all the wiring.

The most common reason for a VAZ-2105 breakdown is damaged wire insulation or lack of contact. In this situation, it is necessary to test all sections of the wiring using a special device. Defective electrical wiring is replaced with a new one or part of the non-working wire can be replaced. If the insulation is damaged, then with the help of electrical tape, this problem is eliminated.

The electricity system on the VAZ-2105 injection type can often fail. For this reason, many car owners do not want to change the carburetor system to injectors. Since the fuel injection system is much more complicated, it is almost impossible to identify a malfunction without computer diagnostics. However, you can do some of the steps yourself. For example, first of all, you need to check the spark plugs, this is the most common problem on the "five".

In addition, according to the diagnostic scheme 21053, it is recommended to check the resistance of the coils and inspect the wiring and contacts. The main and most common problem in the incorrect operation of the ignition may be some trivial reason. You need to pay attention to the air supply sensor, and most importantly, its contacts. To carry out a more thorough diagnosis of it, you need an oscilloscope.

In principle, for self-diagnosis of the VAZ-2105, it is enough to have the necessary set of tools and a desire to understand the cause of the malfunction. For these purposes, there are many manuals, recommendations, articles, and taking into account the reluctance of many service stations to take on the Soviet auto industry and the cost of these works, do-it-yourself repairs would be even preferable. Despite the fact that the VAZ-2105 injector is rather difficult in electronics, it is still possible to deal with it. The domestic auto industry remains the most widespread and affordable service, so many car owners prefer to start their driver's journey with it.

There is a special offer on our website. You can get a free consultation of our corporate lawyer by simply asking your question in the form below.

A - the order of the conditional numbering of the plugs in the pads of the headlight wipers 9, the relay 27 and the windshield wiper 18, the carburetor solenoid valve control unit 21. B - the order of the conditional numbering of the plugs in the pads of the mounting block and the three-lever switch.

& nbsp 1. Spark plugs
& nbsp 2. Ignition distributor sensor
& nbsp 3. Screen
& nbsp 4. Hall sensor
& nbsp 5. Switch
& nbsp 6. Ignition coil
& nbsp 7. Mounting block
& nbsp 8. Ignition relay
& nbsp 9. Ignition switch
& nbsp & nbsp A. To terminal “30” of the generator

& nbsp 1. Block headlights with side light bulbs
& nbsp 2. Hood lamp
& nbsp 3. Mounting block
& nbsp 4. Lamp for lighting a glove box
& nbsp 5. Instrument lighting control
& nbsp 6.Taillights with side light bulbs
& nbsp 7. License plate lights
& nbsp 8. Outdoor lighting switch
& nbsp 9. The control lamp for outdoor lighting located in the speedometer
& nbsp 10.Ignition switch
& nbsp & nbsp A. To terminal “30” of the generator
& nbsp & nbsp B. To instrument lighting lamps and switch illumination lamps

& nbsp 1. Carburetor limit switch
& nbsp 2. Ignition coil
& nbsp 3. Solenoid valve
& nbsp 4. Mounting block
& nbsp 5. Ignition relay
& nbsp 6. Ignition switch
& nbsp 7. Wire harness block, connectable
& nbsp & nbsp & nbsp to the electric pneumatic valve control unit
& nbsp 8. Solenoid valve control unit
& nbsp & nbsp A. Order of conditional numbering of plugs in the control unit
& nbsp & nbsp B. To terminal "30" of the generator

& nbsp 1. Generator
& nbsp 2. Battery
& nbsp 3. Shunt coil of stator winding
& nbsp 4. Starter
& nbsp 5. Serial stator coil
& nbsp 6. Retaining winding of the traction relay
& nbsp 7. Retraction winding of the traction relay
& nbsp 8. Starter enable relay
& nbsp 9. Mounting block
& nbsp 10.Ignition switch

& nbsp 1. Accumulator battery
& nbsp 2. Negative diode
& nbsp 3. Additional diode
& nbsp 4. Generator
& nbsp 5. Positive diode
& nbsp 6. Stator winding
& nbsp 7. Voltage regulator
& nbsp 8. Rotor winding
& nbsp 9. Radio interference suppression capacitor
& nbsp 10. Mounting block
& nbsp 11. The control lamp of a charge of the accumulator battery in a combination of devices
& nbsp 12. Voltmeter
& nbsp 13. Ignition relay
& nbsp 14. ignition switch

& nbsp K1. Rear window heating relay
& nbsp K2. Relay for turning on cleaners and headlight washers
& nbsp K3. Relay for turning on horns
& nbsp K4. Relay for turning on the electric motor of the fan of the engine cooling system
& nbsp K5. Headlamp high beam relay
& nbsp K6. Headlamp low beam relay
& nbsp F1-F17. Circuit breakers
& nbsp 1. Tweezers for removing fuses
& nbsp 2. Tweezers for removing the relay
& nbsp 3. Spare fuses

& nbsp Relays K3 and K4 are not installed on VAZ-2105 vehicles.
& nbsp Instead of relay K3, put a contact jumper

& nbsp 1. Relay for turning on the heated rear window (P1)
& nbsp 2. Relay for turning on cleaners and headlight washers (P2)
& nbsp 3. Jumper at the installation site of the relay
& nbsp 4. Spare fuse
& nbsp 5. Relay for high beam headlights (P5)
& nbsp 6. Relay for dipped headlights (P6)
& nbsp 7. Fuse

Fuses in the mounting block are numbered in order from left to right

ELECTRICAL WIRING OF THE VAZ-2105

The battery voltage is supplied to most consumers through the ignition switch. Regardless of the position of the key in the ignition switch, the power circuits of the sound signal, cigarette lighter, brake light, interior lamp, hazard warning switch and portable lamp socket are always turned on. All the pluses are fed through one wire, and the second wire connecting the consumers to the power source is the car body. The VAZ-2105 car is an upgrade of the VAZ-21011 car.

For all questions about repair, please contact the FORUM

The main wiring diagram of the VAZ-2105

The main electrical diagram of the VAZ-2104

Wiring diagram of the injection system

Electronic wiring diagram of the instrument cluster

Brake system warning lamp connection - diagram

Turning on the headlight washers and cleaners - wiring diagram

Wiring diagram for turning on the heater fan motor

1 - mounting block;
2 - heater electric motor switch;
3 - additional resistor; 4 - heater electric motor;
5 - ignition switch;
A - to the terminal "30" of the generator

Electronic circuit for switching on the windshield wiper and washer

Wiring diagram for turning on direction indicators and alarms on a VAZ 2105

The VAZ 2105 model first appeared on the streets of cities in 1980 and immediately became extremely popular. The fact is that the design of the car repeated the features of European models of those years: front and rear headlights, aluminum bumpers, a modern dashboard.

All this required the designers to rework the usual electrical circuit of the car.

The factory wiring diagram attached to the car for the VAZ 2105

The original scheme published in the article will make it easier for car owners and workshop technicians to find faults in the electrical system of a Zhiguli family car.

The wiring diagram of the VAZ 2105, together with a test tester, will allow:

determine the reasons for the failure of the circuit;
identify which sensor or relay has ceased to perform its functions;
establish a breakdown in the ignition system;
determine the circuit whose fuse has blown;
check the on-board voltage supplied by the generator;
find the reason for the failure of incandescent lamps, etc.

Wiring on a vaz 2105 in the process of diagnosis

The VAZ 2101 platform was taken as a basis for the manufacture. In essence, it was the same rear-wheel drive five-seater sedan car. The design of the VAZ 2105 practically copied the models of cars produced in Europe in the early 80s, but it cost an order of magnitude lower, which predetermined its popularity in Western countries.

The price for the VAZ 2105 was the lowest among the rear-wheel drive models

Abroad, the car had the name Lada Riva and Lada Nova (depending on the country of sale). Under these names, he was shown in video advertising.

The car plant produced several modifications of the VAZ 2105:

With the VAZ-2105 index, the car was equipped with a 4-st. gearbox and 1290 cc carburetor engine. cm (63 HP);
VAZ-21050 was equipped with a 5-st. Checkpoint;
The VAZ-21051 was equipped with an engine from a VAZ 2101 (volume 1200 cc, 58 hp) with a 4-speed engine. Checkpoint;
VAZ-21053 was equipped with a VAZ-2103 carburetor engine (volume 1450 cc, 71 hp);
The VAZ-21053-20 was equipped with an injection engine from the VAZ-2104 (volume 1450 cc, 71 hp), which met the requirements of Euro-2. Also with him was 5 tbsp. Transmission.

For reference: the wiring of the VAZ 21053 differed in a different form of terminals in the engine compartment. This was caused by the installation of an ECM, an electronic engine management system and additional sensors.

The electrical equipment of the VAZ-2105 car is made according to the classic single-wire circuit for the Zhiguli family, in which:

the metal body of the car plays the role of the second wire;
the negative terminals of all electrical devices and components are connected to ground;
electrical circuits are protected by fuses;
the work of the main systems is activated through the ignition switch of the car.

For reference: the ignition switch controls electrical networks by supplying power from a battery or generator.
The contact group of the lock is designed in such a way that at the time the engine is started, the wiring of the VAZ 2105 secondary circuits is turned off.

As a control system for the electrical systems of the car, an ignition lock was used, which had four main positions:

The wiring of the VAZ 2105 to the injector is controlled through the ignition switch

Position "0" - everything is off.
Position "1" - ignition is on. The key is locked in the lock, while with the key inserted, external lighting circuits, control devices and alarm lamps (brake fluid level, engine oil pressure, fuel level in the gas tank) can be activated;
Position "2" - starter activation. The auxiliary circuits and the VAZ 21053 wiring connecting them do not work to facilitate starting the engine;
Position "3" - parking. All circuits are off, and after removing the key, the steering column is locked.

For reference: the factory manual informs that regardless of the position of the key, the interior lighting lamps, brake light lamps (when you press the brake pedal), horn and portable lamp connector remain energized.

To protect electrical circuits and devices, a circuit for breaking the electrical connection by a fuse is used. This happens when the voltage increases - the fuse-link melts from temperature and the circuit is disconnected.

VAZ 21053 wiring is protected by a fuse box

From 1 to 17 - fuses;
Relay 18 is responsible for turning on the dipped headlights;
Relay 19 is responsible for turning on the high beam headlights;
Relay 21 activates the head light cleaner and washer;
Relay 22 is responsible for turning on the heated rear window.

For reference: a jumper is indicated under No. 20. The wiring diagram of the VAZ 21053 export version is distinguished by the installation of a relay for turning on sound signals in this place.

The main and most noticeable difference from the classic Zhiguli models in the VAZ 2105 was the headlights. It was their massive appearance that set the modern look of the car. And the ability to remotely adjust the direction of the light beam was completely new.

Wiring diagram VAZ 21053 head light and rear lights

For these purposes, several basic and additional devices served at once, among which the headlight hydrocorrector was a novelty.

His role was as follows:

When loading the car, the rear of the body was lowered;
The luminous flux of the high and low beam headlights began to blind oncoming vehicles;
With the help of a hydrocorrector, the driver could lower (tilt) the headlights without leaving the car.

Thanks to this, the problem of driving safety at night was solved.

Video (click to play).

Differences in vehicle modifications often lead to confusion when servicing electrical components. This is why it is so important to use the original scheme, which is specific to a particular car model, when servicing with your own hands. This will not only avoid problems, but also make troubleshooting easier.