Replacing the light relay on the “six” - the procedure for performing the work. Relay for turning on low and high beam headlights - diagnostics and replacement Connecting light through a relay

Representatives of the “classic” VAZ series and, above all, the VAZ 2101, continue to faithfully serve their owners, but time takes its toll and over the years, these quite successful and reliable cars begin to show “childhood illnesses” associated with design flaws. This fully applies to the not very successful headlight connection scheme, as a result of which, over time, the quality of road illumination significantly deteriorates, energy losses occur and some electrical connections simply overheat dangerously. In general, this is a rather unpleasant problem, but it can be easily solved by including an additional relay in the power supply circuit for the headlights of a VAZ 2101 car, and this work can be done in several ways.

Connection with placement of relays and other circuit elements under the hood of the car (using an additional fuse box)

To implement this option, you will additionally need a sufficiently powerful wire with a cross-section of at least 2.5 mm, standard “eye” type terminals and contacts of both “male” and “female” options. In accordance with the available equipment, it is possible to connect the terminals to the wire either by crimping or soldering. The necessary insulation of the joints is carried out using a heat-shrinkable tube of the appropriate diameter.

1 – headlights; 2 – additional fuse block; 3 – switch-on warning lamp high beam; 4, 6 – headlight control relay; 5 – block with steering column switches; 9 – battery.

We connect the circuit as follows:

• We place two (if there are fog lights -3) relays under the hood in the free space of the right mudguard;
• We take power for the relay directly from terminal “30” of the generator (pink wire);
• We connect terminals 85 of each relay with a wire to an “eye” type terminal with the nearest reliable body ground;
• From terminals 87 we lay wires to the fuse block (fixed there under the hood), and do not forget to install jumpers between the pairs in accordance with the diagram;
• We connect the wires from the headlights to the free terminals of the fuse box (left side in the diagram), being careful not to confuse the high beam with the low beam. Among other things, we connect a wire to one of the terminals related to the high beam, which we then extend into the cabin to the high beam indicator lamp;
• We also lay the wires from the control contacts of each relay through the technological holes into the passenger compartment to the steering column switch block, where we connect them to the high beam circuit (blue and gray with red wires);
• After removing the remaining wire from the cabin fuse block, in addition to everything else, we have at our disposal four unused fuses (3, 4, 5, 6) that can later be used for other needs.

Option with relay placement in the cabin under the instrument cluster

• IN in this case, first of all, we look for blue, gray and red wires on the terminal block of the steering column switches (they come from the fuse block) and switch them from the block to the terminals of 87 additional relays. This action will provide power to the fuse box (in the main diagram - circuits highlighted in pink and brown). Before disconnecting the wires, we make the appropriate marks on the block so as not to get confused with further connections (the blue wire refers to the high beam);

• We connect the wires going to terminals 86 of the relay to the vacant spaces on the block of the steering column switches, trying not to confuse the high and low beam;

• The power connected to terminals “30” can be taken from the ignition switch, or by pulling the wire directly from the battery.

It should be noted that the second one is somewhat simpler to implement (there is no need to pull additional wires from the engine compartment to the passenger compartment). In addition, when placed in the cabin, the circuit elements are in more comfortable conditions (contacts and connections oxidize less), which means you can count on more reliable operation of the circuit.

By the way, a similar method of improvement is fully suitable for some other brands of cars, in particular, it allows you to modernize the low beam circuit of VAZ cars of the subsequent “classic” series, as well as improve the headlight power supply circuit on Volkswagen passat b3.

Almost all cars are equipped with electronic or electromagnetic relays. The fact is that devices that tend to consume too much current can easily burn the contacts, which disrupts the operation of the device itself. To prevent this from happening, relays began to be used in cars. In this article we will reveal what a relay is, how to find out if it is faulty and how to replace it?

What is the headlight switch relay and where is it located?

A relay is an electrical device designed to switch or protect electrical circuits. In the electrical equipment of a car, these are important elements, without which the operation of many electrical appliances becomes impossible. The fact is that the generator is also a source of high current. As the current in the circuit increases, the temperature of the conductors also increases. This has a negative effect on the switch contacts, which simply burn out. The contact surface area of ​​the contacts is disrupted, which means the electrical resistance increases. As a result, the electrical appliance does not work.

Reducing the current is only possible when using batteries with low voltage. However, low voltage, currently, does not allow starting the engine and operating many consumers, so this method is unacceptable.

The solution to the problem is the use of special relays. When the contacts of the switch of the electrical receiver are closed, the relay is the first to receive current, which reduces the current strength and closes the electrical circuit with its contacts. Older cars used electromagnetic relays, the main element of which was a coil with a core. Gradually, they were replaced by electronic relays built on semiconductor elements.

Basic relay faults

Relay malfunctions can be judged if the headlights suddenly stop working. First of all, you need to check the fuse responsible for this. If it has not burned out, the lamps are checked using a direct connection to the battery. Usually, if all the lamps refuse to work, then we can confidently assume that the problem concerns only the light relay.

All cars use two relays. The first is responsible for the operation of the low beam headlights, the second ensures the operation of the high beam. The inclusion of side lights can be controlled either by a separate relay, or connected to one of the other two. During the process of switching the light, the operation of the device is accompanied by a characteristic click, which indicates the operation of the device and that the light has actually switched.

How to change the headlight relay with your own hands?

If the low beam does not work, find the relay of the appropriate nomenclature and pull it out. The installation of the relay depends on the make of the car. In some, a special one is provided for this mounting block, and in early cars the relay is attached to the body by means of a “ground”. If in the case of the first everything is clear, then the second must first be freed from the contact wires, then the mass must be unscrewed. Before carrying out work, be sure to disconnect the negative terminal of the battery.

In place of the low beam relay, install another relay, for example, high beam and check the functionality of the optical device. If the low beam works, then the relay needs to be replaced. This is done quite simply: a new one is installed in place of the old one and connected, similar to the old element.

The same check can be carried out in relation to other modes of operation of the vehicle optics. When conducting diagnostics, the most important thing is to pay attention to the designations and markings of devices. If the current values ​​differ markedly, then it is not allowed to check the functionality of the low beam using the high beam relay. In this case, it is best to purchase a new one and try to turn on the low beam using it.

If, after changing the relay, the low beam still does not work, it means that the relay is working properly and the problem should be looked for in the wiring, circuit protection devices, or in the lamps themselves for the corresponding light operating mode.

That's all you need to know about the low and high beam relays. As you can see, diagnosing and replacing devices is not difficult, and therefore you can do without an auto electrician and save a certain amount. We wish you good luck on the roads!

Safety and comfort are the main qualities worthy of the attention of a car owner. If you care about yourself and each passenger, choose vehicles with fully equipped. Fog lights are not a mandatory component of the car: manufacturers often ignore this functional and useful element, wanting to reduce the cost of the cars they produce as much as possible. How to install and adjust fog lights will be discussed below.

Advantages of functional lighting equipment

Fog lights allow you to partially relieve the strain on the driver's eyes during a forced trip in difficult weather conditions. With their help, it is possible to achieve better illumination of the roadway. The greatest importance of headlights lies in the precise supply of light, which determines the illumination of the road.

Precisely adjusted devices illuminate up to 10 meters of space in front of the car, which is quite enough for safe driving in difficult weather conditions. Of course, for this you will need to adhere to a certain speed limit. The headlights are adjusted during the installation of the equipment. The quality of road lighting depends entirely on the setting of the angle of incidence of the light flux.

Connecting fog lights

Any driver who has an idea of ​​how to properly handle the tool can handle installing fog lights on a car. If you only know how to drive a car and do not touch the tools, it is unlikely that you will be able to equip your personal car with fog lights. In this case, it is recommended to contact the station specialists Maintenance. Before connecting the equipment, you will need to gather some tools and materials. You will need:

• set of wires for connecting fog lights;
• insulating tape;
• headlight block and relay;
• piercing and cutting instruments;
• fuse;
• power button.

Once the kit for connecting fog lights is assembled and ready for use, we proceed to connecting the fog lights. Below is the installation algorithm:

1. First you will need to remove the central panel, where a pair of backlight bulbs for the furnace regulator are located.
2. Run your hand along the wires until you can feel the two-pin connector, which will be useful during the connection process. You will subsequently need to secure the first contact to the relay to the connector.
3. Take the first wire, then connect it to the stove light connector, while connect the second wire to the button
4. Connect the wire to the relay, thanks to which you will be able to get a 12-volt circuit and pin 85 (as shown in the diagram below for connecting fog lights through a relay).
5. Contact 87 will need to be routed to the battery under the pedals of the car. Also at this stage, a fuse is installed for a maximum current of 15 amperes. Try to place the fuse closer to the battery
6. Contact 86 closes with the vehicle body.
7. Each headlight has two wires (+ and -). Both positives coming from the headlights need to be connected, while the negative is connected to the body. The plus connects to the corresponding battery terminal. Bring it to the relay so that the wires are invisible, and then connect it to the connector marked 30 in the diagram.

After you have managed to connect the fog lights, be sure to test them and check their functionality. If the headlights do not turn on, an error has been made.

Installation recommendations and hardware requirements

Installation of fog lights must be carried out in accordance with the current Rules traffic. The traffic rules contain clauses on how to equip a car with fog lights. If you cannot figure out how to install fog lights yourself, having a diagram and a clear sequence, we recommend contacting a competent specialist. This will reduce nerve cells and personal time. The connection diagram for fog lights is contained on the traffic regulations pages.

It will be possible to achieve high-quality illumination of the road surface in bad weather conditions by appropriately adjusting the angle of the light flux.

The light must spread above the horizontal plane. Headlights should be installed in the lower area of ​​the body to bring the devices closer to the road.

When installing fog lights in the lower part of the car, take care to protect the headlights and prevent impacts from sticks and stones that are often found on the road. To do this, use special plugs. Take care of your fog lights, keep them clean, and then the equipment will serve you for many years.

If your profession involves frequent car trips, or you simply like to travel, then you probably know that without good optics it is quite difficult to guarantee driving safety. At this point, even the shortest trip should not be undertaken without good anti-fog equipment. Such optics are now installed on almost every car as standard.

However, there are cars in which you have to independently connect the fog lights via a relay. The diagram and installation steps for this optics are further in our article.

What are fog lights for?

Before I tell you about the features of installing these elements, a few words about the importance they are for the car. The main function is to supply light. The quality and range of road illumination depend on this characteristic. If the fog lights are well configured, they are capable of illuminating up to 10 meters of asphalt in front of them, which is quite enough for safe driving at a speed of 50-60 kilometers per hour. Moreover, it does not matter what weather you are driving in - with a cloudless sky or with thick fog - this optics always copes with its function. So how do you install it in a car?

Connecting fog lights via relay: diagram and instructions

First, let's prepare necessary tools and materials. During the work, we will need a 15 amp fuse, several meters of wires, insulating tape, a power button, a block and a PTF relay. The connection diagram for fog lights via a relay is shown in the photo below. We will navigate by it.

This is the same diagram for connecting the fog light relay. In principle, it does not present any complexity, and it is very easy to understand.

Where to start installation?

The first step is to remove the central panel - there will be 2 backlight lamps for the furnace regulator. They do not affect the operation of the PTF in any way, but we will need their wires. To find the two-pin connector, run your hand along the wire to the very end. It is especially important since this is where the first contact on the relay will be made. Next, the wire is connected to the stove backlight connector, and its second part goes to a separate PTF power button.

Connecting contacts

How to connect fog lights via a relay further? In order for the system to have a twelve-volt network from the dimensions and 85 contacts, it is necessary to run a wire to the relay. Next we extend contact 87 under the pedals to the battery.

How to properly connect fog lights through includes 30, 85, 86 and 87 contacts. According to the drawing, we connect them. We also install a 15-amp fuse here. Moreover, the closer it is to the battery, the better. Next is contact 86. Everything is simple here - we connect it to the body.

About wires

Now you need to deal with the fog lights themselves. As we know, there are only two wires coming from each headlight (“plus” and “minus”, respectively). We connect the latter to the body, that is, it will be our mass. Next, we lift it onto the relay so that the wires are not visible, and connect it to the battery.

This completes the connection of the fog lights via the relay. The connection diagram, as we see, is very simple, so even a novice motorist can cope with this task.

Second installation option

It will be much easier for car owners whose bumper already has space for mounting fog lights. Then you don't need to buy any fuses. All that is required is a pair of new fog lights and up to 100 centimeters of wire (in reserve).

PTFs for foreign cars most often have two wires, painted black and red. The latter is connected to the “plus”, and the first to the “minus”. Although on some copies (such as, for example, on fog lights for “ Daewoo Nexia"made in Asia) it doesn’t matter what color you connect to what. Red may well serve as a “plus” and “minus”. By the way, if you don’t find wires for connecting optics in the bumper, it doesn’t matter - you can try connecting them directly to the battery. Moreover, it is not necessary to pull the “plus” and “minus” from each lamp separately. The installation procedure can be as follows - two wires (as we have already said, black and red) are installed to the battery terminals (more precisely, under them), which go first to the left headlight on the driver’s side, and then to the right. If the wires are short, take longer ones, strip their contacts at the ends and connect them. You will have to stock up on electrical tape for this. The color of the long wire that will connect to the PTF and battery is not important. The main thing is that you do not get confused in the polarity. You should also be vigilant and disconnect power from the battery before installation. Otherwise, the slightest contact of the wire with the body may cause a short circuit.

This algorithm for installing PTF is suitable not only for foreign cars, but for all domestic cars, on which the manufacturer provides a place for mounting the optics. For example, on VAZ 2110 and 2114 cars, connecting foglights in this way takes no more than 20-40 minutes (and this despite the fact that the car owner has no experience installing such equipment on a vehicle).

What requirements must PTFs meet?

Finally, we note what rules modern fog lights must meet:

Conclusion

As you can see, connecting fog lights to the VAZ 2110 and many other cars domestic production- this is a fairly easy task that every car enthusiast can handle. Anti-fog headlight- this is your reliable assistant, which allows you to distinguish objects on the road surface in time and react to the traffic situation with a large margin of time.

A node such as a relay is a kind of switch that allows, using nodes with low current (buttons and switches), to turn on nodes with high current (starter, signal, headlights, etc.). If this unit were not there, the button could simply melt due to high load, so the importance of the relay is very great; today we will consider this element as an important part of the low beam system in a car.

IN modern cars relays are most often present, but in older cars they were not always installed, so it makes sense to upgrade the system to remove the load from the steering column switch, which over time often fails precisely because of its absence in the circuit. In addition, you will notice an improvement in the quality of light, which is also important.

So, first of all, you need to purchase everything you need:

Important!
It is better to have a voltmeter on hand to find the power supply. If you know its location, then this device will not be needed.

Workflow Description

If a relay for switching low and high beam headlights is already installed on the car, then you do not need to upgrade the system; if problems arise, you need to use the diagram to figure out where the required element is located to check its functionality.

Everything here is simple and clear, but if there are no relays, then we recommend installing them, as this will increase the reliability of the system and improve its operation.

Preparatory activities

When doing the work yourself, make sure that all the required elements are at hand, after which you can begin the process:

• To begin with, place the car so that you can work comfortably and nothing will disturb you. Of course, the ideal option is a garage, but if you don’t have one, then you can do everything you need right on the street;
• First of all, you need to open the hood, then turn on the low beam in the car and use a tester to find the power supply. The work is simple: you measure the voltage at each contact where it is - that’s where the power supply is supplied;
• Next, you need to turn off the ignition and remove the terminal from the battery to eliminate any troubles in the working process;
• Then you disconnect the connector from the low-beam headlight and try to get the power wire out of it, if it works - great, if not - cut the wire, strip it and crimp it with a terminal; it is best to close all open areas with a cambric;

Connection

The instructions for connecting the relay are quite simple and clear; first, read the diagram to understand the design.

• First of all, take a short length of wire to ground, the easiest way is to connect it to ground on the lamp connection chip, this is the simplest and fastest option (most often it is a double brown wire);
• Now you need to connect all the wires to the relay, let's look at the work using the example of a relay from a VAZ: the wire from the steering column switch is connected to the 86th terminal, the line coming from the lamp connector is connected to the 87th, the ground is placed on the 85th, and the supply wire from the battery is located on terminal No. 30. All connections are made using chips - no twists or tape;

• Decide in advance where the relay will be located, you cannot place it near the engine, since if this unit is constantly heated, its service life is significantly reduced.

Advice!
You can place the relay next to the battery, it all depends on what is more convenient in your case.

Conclusion

The relay is an important part of the low beam system, preventing overload of the controls and reducing the loss of current to the headlight, since it will now go directly through the relay rather than through the switch. The video in this article will tell you about Additional information on this topic.