Alarm button as a must
Content
Every car has an emergency warning button. When pressed, the direction indicators and two repeaters located on the front fenders begin to flash at the same time, a total of six lights are obtained. Thus, the driver warns all road users that he has some kind of non-standard situation.
When does the hazard warning light come on?
Its use is mandatory in the following situations:
- if there was a traffic accident;
- if you had to make a forced stop in a prohibited place, for example, due to a technical malfunction of your car;
- when in the dark you are blinded by a vehicle moving towards a meeting;
- the hazard warning lights are also activated in the event of towing by a power-driven vehicle;
- when boarding and disembarking a group of children from a specialized vehicle, while an informative sign - "Carriage of children" must be attached to it.
What does the alarm button hide?
The device of the first light alarms was quite primitive, they consisted of a steering column switch, a thermal bimetallic interrupter and light direction indicators. In modern times, things are a little different. Now the alarm system consists of special mounting blocks, which contain all the main relays and fuses.
True, this has its drawbacks, so, in the event of a break or combustion of the chain section, which is located directly in the block, to repair it, it is necessary to disassemble the entire block as a whole, and sometimes it may even need to be replaced.
There was also an alarm emergency shutdown button with outputs for switching circuits of lighting devices (in case of a change in operating mode). Of course, one cannot fail to name the main components, thanks to which the driver can notify other road users about the non-standard situation that is happening - lighting devices. They include absolutely all the direction indicators that are on the car, and an additional two repeaters, the latter are, as already mentioned, on the surface of the front fenders.
How does the alarm circuit work?
Due to the large number of connecting wires, the modern alarm system has become much more complicated than its prototype, and consists of the following: the whole system is powered only from the battery, so you can ensure its full operation even if the ignition is off, i.e. while the vehicle is parked. At this time, all the necessary lamps are connected through the contacts of the alarm switch.
When the alarm is on, the power circuit works as follows: voltage is supplied from the battery to the contacts of the mounting block, then it goes through the fuse directly to the alarm switch. The latter connects to the block when the button is pressed. Then it, again passing through the mounting block, enters the turn-interrupter relay.
The load circuit has the following scheme: the alarm relay is connected to contacts that, when a button is pressed, come into a closed position between themselves, so they connect absolutely all the necessary lamps. At this time, the control lamp is switched on in parallel through the contacts of the alarm switch. The connection diagram for the alarm button is quite simple, and it will take you no more than half an hour to master it. It is necessary to remember its significance, so be sure to monitor its condition.
