How to properly connect a relay to a light. Relay for turning on low and high beam headlights - diagnostics and replacement. What is a headlight switch relay and where is it located?

Electronic relays DRL-30 and DRL-6 - mogut used on high beam, low beam headlights, PTF and other DC circuits. CommuteYut current up to 30A, voltage up to 30V. Installation and installation are very simple: just replace the standard relay , or connected in parallel to the standard relay or to the circuits necessary for the operation of the headlights, including the DRL mode. If the car circuit does not have a headlight switch relay, you can addelectronic relay, usingusing it both as a standard headlight switch relay (DRL-30) and as a unit that controls the “DRL mode”on standard headlights (DRL-30 or DRL-6).

The DRL-30 relay can operate in several modes - the mode is selected by the user.

1. Operating mode with DS headlights (standard). "Soft" switching on ("soft start" for 0.2 seconds) of powerful lamps facilitates the operating conditions of the generator and the vehicle's electrical wiring, because the maximum current (peak), several times greater than the operating current of the lamps, flows through the lamps only at the moment of switching on, i.e. when the lamp filament is cold and its resistance is minimal, the “soft start” function smoothes out this peak. When the filament heats up, the current decreases to the operating current for a given lamp. Thus, the smooth switching on of the lamps - “soft start” for even 0.1-0.2 seconds - significantly extends the life of the lamps, generator and car wiring.

2. Operating mode with BS or PTF headlights (standard). In this mode, the DRL-30 relay smoothly (1-2 seconds) turns the headlights on and off, easing the operating conditions of the generator and saving the lamps from burning out.

3. Mode of operation with DS, BS or PTF headlights as a DRL controller (only for DRL-30). The DRL-30 relay provides the ability to operate standard headlights both in normal mode and as DRLs with a reduction in the brightness (power) of the lamps from 5 to 100% - the brightness can be set in the settings(only for DRL-30).

Peculiarities

Maybe completely replace the standard relay e turning on the headlights DS, BS, PTF, etc.;

May be connected in PARALLEL to the standard relay turning on the headlights(only for DRL-30-N-A, DRL-30-P-A, DRL-6-V3),

Can be connected and used only for controlling "DRL mode" on standard headlights (DS_25-33%, BS_60-90%, PTF_60-90%, DRL_5-100%);

It has "soft start"(up to 0.2 sec) to limit the starting current of the lamps, which facilitates the operating conditions of the lamps, generator and vehicle wiring and significantly increases their service life;

Allows flash the headlights high beam;

It has smooth on-off(1-3 sec) headlights in “Mode 2”, in “Mode 3” and “Mode 4”, for installation instead of the standard relay for switching low beam, DRL and PTF;

Has the ability to quickly mode programming;

Has an operating mode standard headlights in DRL mode(DRL - daytime running lights) with their power limited;

It has built-in overload protection in lamps with status indication, after removing the load the controller is again ready for operation;

It has thermal protection- the temperature sensor built into the relay will operate when the temperature permissible for the relay power switch is exceeded (> 130C) and will indicate to the driver overheating by short blinking of the headlights;

It has protection from low and high voltage - when the voltage in the on-board network is below 9 volts DRL relay-30 will give a low voltage signal (short flashing of the headlights);

It has very low resistance an open electronic power switch, which is tens of times lower than the resistance of the closed contacts of an electrical mechanical relay, does not cause a voltage drop, which allows the lamps to shine brighter;

It has stabilization-limitation of output voltage to protect lamps from overvoltage;

Absence mechanical parts at very high reliability components significantly increase the reliability of vehicle lighting devices and, as a result, increases traffic safety.

Connection

The DRL-30 controller is installed instead of the standard relay 904.3747.10 or 904.3747-11 to turn on the high and/or low beam and PTF.

When voltage is applied to the contacts of the “relay winding” 85-86, the current begins to gradually increase between contacts 30-87 - the lamp begins to light up smoothly. The time until full activation is from 0.1-0.2 seconds (for 1-DS mode) to 2-3 seconds (in other modes).

	Block diagram of the relay controller for smooth switching off/soft switching on of light DRL-30
	Connecting the wire (yellow) to the additional terminal (2.8mm) of the DRL-30 relay). In later ones, the terminal is on the side, not on the top. In DRL-30-M-F and DRL-30-MAD (DRL-30-MA2D) - an additional connector with wires is connected. To protect against dirt, the hole is closed with a plastic plug if the connection is not in use.
DRL-30-N (NR) DRL-30-M (MR)(ver.1.019 and higher)
	Connection diagram for relay DRL-30-N (NR) or DRL-30-M(MR)(ver.1.019 and higher) to replace the standard relay. "+12V BAT" - +12V constant, "+12V Run" - +12V Ignition, "GND" - "ground".
	Connection diagram for relay DRL-30-N (NR) or DRL-30-M(MR)(ver.1.019 and higher) to provide DRL mode without taking into account the dimensions and handbrake - DRL mode is turned on when the engine starts and turns off when the ignition is turned off. "+12V BAT" - +12V constant, "+12V Run" - +12V Ignition, "EXT" - +12V from the dimensions/from the BS headlights, "GND" - "ground". The polarity of the connection to terminals 85-86 does not matter. The normal operating mode of headlights switched on via relay DRL-30-N or DRL-30-M(MR)(ver.1.019 and higher) remains in full.
	Connection diagram for relay DRL-30-N (NR) or DRL-30-M(MR)(ver.1.019 and higher) with adapter D-04 (D-03) to provide DRL mode "+12V BAT" - +12V constant, "+12V Run" - +12V Ignition, "EXT" - +12V from the dimensions/from the BS headlights, "GND" - "ground". The polarity of the connection to terminals 85-86 does not matter. The normal operating mode of headlights switched on via relay DRL-30-N or DRL-30-M(MR)(ver.1.019 and higher) remains in full.
DRL-30-M-A (MR)
	Connection diagram for relay DRL-30-M (MR) with adapter D-04 (D-03) to provide DRL mode "+12V BAT" - +12V constant, "GND" - "ground". The polarity of the connection to terminals 85-86 does not matter.
	Connection diagram for the DRL-30-M (MR) relay to provide the DRL mode without taking into account the dimensions and the handbrake - the DRL mode is turned on when the engine starts and turns off when the ignition is turned off. "+12V BAT" - +12V constant, "+12V Run" - +12V Ignition, "EXT" - +12V from the dimensions/from the BS headlights, "GND" - "ground". The polarity of the connection to terminals 85-86 does not matter. Note. In circuits where one terminal of the "coil" of relay 85-86 is connected to circuit 15 (or 15A, or "Hot in Run", or "Power when the ignition is on"), such as in the diagram, connect the yellow wire to activate the mode "DRL_on_BS-FOG" is not required - "Simple replacement" is used. The “yellow wire” in such circuits can be used to turn off “DRL_on_DS” when, for example, the BS headlights are turned on (see Description-Instructions DRL-30-M). However, the “yellow wire” connected to circuit 15 (or 15A, or “Hot in Run”, or “Power when the ignition is on”) is needed in circuits where the upper (according to the diagram) relay terminals are closed to each other and connected to the circuit 30 (“Constantly energized”), as, for example, in the diagram. The normal operating mode of the headlights, switched on via the DRL-30-M relay, remains in full.
DRL-30-MAD (DRL-30-MA2D)
	Connection diagram for the DRL-30-MAD relay to provide DRL mode - complete connection. "+12V BAT" - +12V constant, "+12V Run" - +12V Ignition, "EXT" - +12V from the dimensions/from the BS headlights, "GND" - "ground". The polarity of the connection to terminals 85-86 does not matter. The normal operating mode of the headlights, switched on via the DRL-30-MAD relay, remains in full.
	In the operating mode on the BS, PTF, DRL headlights, the lamps turn on and off smoothly. The relay has stabilization (limitation) of the output voltage to the lamps - to protect them from burnout. The normal operating mode of the headlights, switched on via the DRL-30-MAD relay, remains in full regardless of the operation of the DRL mode. .
	Connection diagram for the DRL-30-MAD relay to provide DRL mode without taking into account the dimensions and the handbrake - the DRL mode is turned on when the engine is started and turned off when the ignition is turned off. "+12V BAT" - +12V constant, "+12V Run" - +12V Ignition, "EXT" - +12V from the dimensions/from the BS headlights, "GND" - "ground". The polarity of the connection to terminals 85-86 does not matter. However, the “red wire” connected to circuit 15 (or 15A, or “Hot in Run”, or “Power when the ignition is on”) is needed in circuits where the upper (according to the circuit) relay terminals are closed to each other and connected to the circuit 30 (“Constantly energized”), as, for example, in the diagram.
	The “red wire” in such circuits can be used to turn off “DRL_on_DS” when, for example, the BS headlights are turned on (see Description-Instructions DRL-30-M).
	In circuits where one terminal of the "coil" of relay 85-86 is connected to circuit 15 (or 15A, or "Hot in Run", or "Power when the ignition is on"), such as in the circuit, connect the wire to activate the "mode" DRL_on_BS-FOG" is not required - "Simple replacement" or "Mode 7" is used. The “red wire” (and other wires - additional inputs) in such circuits can be used to turn off “DRL_on_DS” when, for example, the BS headlights are turned on (see Description-Instructions DRL-30-MAD).
DRL-30-P (PR)
	Connection diagram for relay DRL-30-P (PR) with adapter D-04 (D-03) to provide DRL mode "+12V BAT" - +12V constant, "+12V Run" - +12V Ignition, "EXT" - +12V from the dimensions/from the BS headlights, "GND" - "ground". The polarity of the connection to terminals 85-86 does not matter.
	Connection diagram for the DRL-30-P (PR) relay to provide DRL mode without taking into account the dimensions and handbrake - the DRL mode is turned on when the engine starts and turns off when the ignition is turned off. "+12V BAT" - +12V constant, "+12V Run" - +12V Ignition, "EXT" - +12V from the dimensions/from the BS headlights, "GND" - "ground". The polarity of the connection to terminals 85-86 does not matter. Note. In circuits where one terminal of the 85-86 relay "coil" is connected to circuit 15 (or 15A, or "Hot in Pun", or "Power when the ignition is on"), such as in the diagram, connect the yellow wire to activate the mode "DRL_on_BS-FOG" is not required - "Simple replacement" is used. The “yellow wire” in such circuits can be used to turn off “DRL_on_DS” when, for example, the BS headlights are turned on (see Description-Instructions DRL-30-P). The normal operating mode of the headlights, switched on via the DRL-30-P relay, remains in full.

If everything is connected correctly, the relay controller is immediately ready for operation.

ATTENTION! Please note the +12V connection from the vehicle’s on-board power supply:

- for DRL-30-N-A DRL-30-M- A(ver.1.0191 and higher) - the +12V voltage must be constantly on contact “30” of the relay, control is by supplying +12V to one of the “winding” contacts - this connection is standard, otherwise the relay will not be controlled - the contacts will be constantly closed 30-87 (current will flow through the protective diode). In this case, it is necessary to swap the wires from terminals 30 and 87 or use the DRL-30-NR relay, which has a reverse load switching circuit.

- for DRL-30-MAD, DRL-30-M-F and DRL-30-M- A(ver.1.0191 and higher) - the +12V voltage must be on contact “30” of the relay, control is by applying “ground” or “plus” to one of the “winding” contacts - such a connection is standard, otherwise the relay will not be controlled - Contacts 30-87 will be permanently closed (the current will flow through the protective diode). In this case, it is necessary to swap the wires from terminals 30 and 87 or use the DRL-30-MR relay, which has a reverse load switching circuit.

- for DRL-30-P-A- “ground” must be on contact “30” of the relay, control is by supplying “ground” to one of the contacts of the “winding” - such a connection is standard, otherwise the relay will not be controlled - contacts 30-87 will be constantly closed (current will flow through protective diode). In this case, it is necessary to swap the wires from terminals 30 and 87 or use the DRL-30-PR relay, which has a reverse load switching circuit.

When connecting a relay controller, you can use inverters V-07 and V-17 to match the input circuits. The polarity of connection to pins 85-86 does not matter, i.e. they can be swapped if necessary. All other connections are in accordance with the diagrams and descriptions that are in the instructions and on the website.

Operating principle of the DRL-30 controller

ATTENTION! The DRL-30 relay in modes 1-2-3 works both as a standard one and as a relay for turning on the headlights in DRL mode, i.e. can be connected both in parallel with the standard relay, and INSTEAD OF THE STANDARD relay for switching on DS, BS, PTF, etc. In mode 4, the DRL-30 relay is switched on instead of the standard DRL relay, if there is one in the car (for example, it is provided in the FORD FOCUS, FORD FUSION, etc. circuit).

The controller has four operating modes: “Mode 1-DS” – for working with high beam lamps (DS), “Mode 2-BS” – for working with low beam lamps (BS) and PTF, “Mode 3-LED” – for work with special (including LED) DRL headlights (DRL) and "4-DRL Mode" - to work instead of the standard DRL relay, ensuring a decrease in the brightness of the BS lamps (replaces the quenching resistor) and their smooth on-off.

The DRL-30 controller allows you to use DS, BS or “special DRL” headlights in DRL mode - daytime running lights. The DRL-30 controller automatically turns on the headlights (for DS and BS - with brightness adjustment, for "special DRL" - without adjustment) when you turn on the ignition and start the engine, when you turn on the headlights or the handbrake in this case, the DS and BS headlights go out completely ( "special DRL" - dim down to 5%). To connect, you can use the D-03 adapter - the connection diagram is in the Instructions for the controller.

When connecting the DRL-30 relay controller to the "+12V Ignition" circuit (via adapter D-03), any of the first three modes is supplemented by the "DRL" function: in "Mode 1 - DS" - the DRL mode is ensured by turning on the DS headlights by 25% or 33%, in "Mode 2 - BS" - DRL mode is ensured by turning on the BS headlights at 60-90%, in "Mode 3 - LED" - DRL mode is ensured by turning on the DRL headlights (LED DRL) at 100 % with a glow adjustment of up to 5% when the headlights are on., in “4-DRL Mode” - it turns on instead of the standard DRL relay with a headlight boost of up to 70%, turning on the headlights only when starting the engine and with a smooth on-off switching of the headlights.

Mode 1 - "DS".
This mode is primarily intended for use with high beam headlight bulbs. (May be changed or missing in different firmware versions).

When the controller is turned on (power is supplied to the relay “winding”), the power switch on pins 30 and 87 closes and the LED indicating the relay status turns on. When voltage is further applied to the “winding” (contacts 85-86) of the controller, the LED goes out after 1 second, which indicates its transition to the “smooth extinguishing mode” state; the voltage at pin 87 does not change.


Thus, if you turn on the controller-relay for a time of less than 1 second and remove the voltage from the “winding”, then contacts 30-87 will open immediately, which allows the headlights to flash. If you hold the voltage on contacts 85-86 for more than 1 second, then when the voltage is removed, the headlights smoothly dim (fade) according to an exponential law, which is most pleasing to the eye.

When the DRL-30 relay controller is connected to the "+12V Ignition" circuit (via adapter D-03), this mode is supplemented by the "DRL" function: in "Mode 1 - DS" - the DRL mode is ensured by turning on the DS headlights at 1/ 4 or at 1/3 power (25% and 33%).

Mode 2 - "BS".
This mode is mainly intended for use with low beam and fog headlight lamps.

When the controller is turned on (power is supplied to the relay “winding”), the current on pins 30 and 87 gradually increases (within 1-4 seconds) and the LED indicating the relay status turns on. When voltage is further applied to the “winding” (pins 85-86) of the controller, the LED goes out after 1 second, which indicates its transition to the “soft shutdown-fading mode” state; the voltage at pin 87 does not change.

If you turn on the controller-relay for a time of less than 1 second and remove the voltage from the “winding”, then contacts 30-87 will open immediately, if you hold the voltage on contacts 85-86 for more than 1 second, then when the voltage is removed, the headlights will “softly” turn off (1-5 sec).
When the current protection (1) is triggered during an overload, the controller supplies current in short pulses (the LED blinks rarely), when the current protection (2) is triggered when short circuit in load – the load is de-energized and the LED blinks frequently. When turned on again without overload, the controller is again ready for operation.
When the DRL-30 relay controller is connected to the "+12V Ignition" circuit (via adapter D-03), this mode is supplemented by the "DRL" function: in "Mode 2 - BS" - the DRL mode is ensured by turning on the BS headlights at 2/ 3, at 3/4 or 9/10 power (65% 75% or 90%).

Mode 3 - "LED"

This mode is intended for use with special DRL headlights (DRL) in the "Daytime Running Light" mode (May not be available in different firmware versions)..

In this mode, as in “Mode 2 - BS”, the headlights are smoothly turned on and off, but when the headlights and/or handbrake are applied (via the D-03 adapter), the headlights do not go out completely, but dim down to 5% - when in use with LED DRLs it provides additional attractiveness appearance car.

When the DRL-30 relay controller is connected to the "+12V Ignition" circuit (via adapter D-03), this mode is supplemented by the "DRL" function: in "Mode 3 - LED" - the DRL mode is ensured by turning on the DRL headlights (LED DRL )) 100% with a glow boost of up to 5% with the lights/handbrake on. Mode 4 - "DRL"

This mode is intended for use with BS headlights in the DRL (DRL) “Daytime Running Light” mode - the relay is installed in place of the standard DRL relay in the car. (May not be available in different firmware versions).

In this mode, as in “Mode 2 - BS”, smooth on/off headlights are ensured, but the DRL-30 relay is turned on instead of the standard DRL relay provided in cars, for example, in FORD Fusion, FORD Focus etc., replacing not only the relay, but also the quenching resistor (reduces the brightness of the headlights to 75% of the power), ensuring smooth switching on of the headlights only when the engine starts. In this mode external connections(dimensions, handbrake) are not used.

When you turn on the DRL-30 relay controller, i.e. when voltage is applied to the winding, the relay enters the standby mode and turns on the headlights (smoothly) only when the engine starts (at a given switching threshold, see Programming), and turns off the headlights just as smoothly - when the ignition is turned off. No additional connections are required for this mode.

ATTENTION! For a precise description of the functions, see the Instructions supplied with the controller.

Programming

Entering the programming mode of the DRL-30-M-A controller (DRL-30-N-A, DRL-30-P-A) is done by turning the relay controller on and off 21 times with a frequency of approximately 2 Hz (2 times per second), then waiting for the desired position (see. instructions ) - turn the controller on and off one more time. It is more convenient to program the DRL-30 controller by installing it in place of the standard relay for turning on the high beam and controlling the high beam “blinking” lever.

Relay DRL-30-M-A with cover removed Relay DRL-30-M--F included

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 – signaling lamp for turning on the 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.

Annex 1.
Short review domestic standard relays in housings as shown in the photograph below.

Below you will find information from one manufacturer; there are other manufacturers and foreign analogues. For this part of the article, the main thing is to make it clear to the average car enthusiast that relays can be interchangeable, have different schemes, different number of contacts depending on the purpose.

Domestic relays of this series mark the normally closed contact as 88. In imported relays this contact is everywhere called 87a

Typical schemes relay. Tsokolevka.

Scheme 1

Scheme 1a

According to scheme 1, the following 5-contact (switching) relays are produced:

With 12V control - 90.3747, 75.3777, 75.3777-01, 75.3777-02, 75.3777-40, 75.3777-41, 75.3777-42

With 24Volt control - 901.3747, 901.3747-11, 905.3747, 751.3777, 751.3777-01, 751.3777-02, 751.3777-40, 751.3777-41, 751.3777-42

According to scheme 1a with an anti-interference resistor:

With 12V control - 902.3747, 906.3747, 752.101, 752.3777, 752.3777-01, 752.3777-02, 752.3777-40, 752.3777-41, 752.3777-42

With 24Volt control - 903.3747, 903.3747-01, 907.3747, 753.3777, 753.3777-01, 753.3777-02, 753.3777-40, 753.3777-41, 753.3777-42

Scheme 2

Scheme 2a

According to scheme 2, the following 4-pin (closing/closing) relays are produced:
With 12V control - 90.3747-10, 75.3777-10, 75.3777-11, 75.3777-12, 75.3777-50, 75.3777-51, 75.3777-52, 754.3777, 754.3777-01, 754.37 77-02, 754.3777-10, 754.3777-11, 754.3777-12, 754.3777-20, 754.3777-21, 754.3777-22, 754.3777-30, 754.3777-31, 754.3777-32

With 24Volt control - 904.3747-10, 90.3747-11, 901.3747-11, 905.3747-10, 751.3777-10, 751.3777-11, 751.3777-12, 751.3777-50, 751.3777-5 1, 751.3777-52, 755.3777, 755.3777-01, 755.3777-02, 755.3777-10, 755.3777-11, 755.3777-12, 755.3777-20, 755.3777-21, 755.3777-22, 755.3777-30, 755.3777-31, 755.3 777-32

According to scheme 2a with an anti-interference resistor:
With 12V control - 902.3747-10, 906.3747-10
With 24Volt control - 902.3747-11, 903.3747-11, 907.3747-10

Scheme 3

Scheme 3a

According to scheme 3, the following 4-contact (breaking/switching) relays are produced:
With 12V control - 90-3747-20, 904-3747-20, 90-3747-21, 75.3777-20, 75.3777-202, 75.3777-21, 75.3777-22, 75.3777-60, 75.3777-602, 75 .3777-61, 75.3777-62

With 24Volt control - 901-3747-21, 905-3747-20, 751.3777-20, 751.3777-202, 751.3777-21, 751.3777-22, 751.3777-60, 751.3777-602, 751.377 7-61, 751.3777-62

According to scheme 3a with an anti-interference resistor:
With 12V control - 902-3747-20, 906-3747-20, 902-3747-21, 752.3777-20, 752.3777-21, 752.3777-22, 751.3777-60, 751.3777-61, 62,

With 24Volt control - 903-3747-21, 907-3747-20, 753.3777-20, 753.3777-21, 753.3777-22, 753.3777-60, 753.3777-61, 753.3777-62,

ATTENTION!!!
Relays of the 19.3777 series have a housing similar to the one above. The circuit of these relays has protective and decoupling diodes. Such relays have a polarized winding. These relays are not mentioned here in the article because they have limited use.

Relays of modern cars.

Differences and variety of relay numbers mean different mountings, housing design, degree of protection, coil control voltage, switched currents and other parameters. Sometimes when choosing an analogue it is necessary to take into account some parameters.

According to scheme 5, the following 4-contact (closing/closing) relays are produced:
With 12V control - 98.3747-10, 982.3747-10
With 24V control - 981.3747-10, 983.3747-10

According to scheme 5a with an anti-interference resistor:
With 12V control - 98.3747-11, 98.3747-111, 982.3747-11
With 24V control - 981.3747-11, 983.3747-11

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:

Wires	You will need approximately 3 meters of insulated copper wire, designed for a current of 15-20 Amps, this is very important, since the quality of light largely depends on the wire. Also, do not forget about the terminals with which all connections will be made; twists and electrical tape are unacceptable
Relay	You will need two of them - one for each headlight. For these purposes, you can use a variety of options, both foreign and domestic, their prices are quite affordable and accessible. You can buy a relay at any automotive store, so there will be no problems with the purchase
Block	This is the name of the node into which the relay is inserted; naturally, both elements must fit together. Therefore, it is better to buy a block together with a relay
Fuse	Depending on the modification of the car, 10 or 15 Ampere fuses are used; naturally, they must be with chips in order for the design to be reliable and of high quality

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.

May 13, 2017

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

Handle installation fog lights Any driver who has an idea of ​​how to properly handle the tool can drive 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 car pedals. 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 is connected 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 on your own, 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.