How does the weight switch ensure the safety of the car?

Manufacturers have accumulators in either the luggage compartment, or under the rear seat, or in another secluded place, access to which is difficult. If a short circuit occurs in the vehicle wiring , a fire breaks out, in which it is very difficult to save the car, because the terminal can not be quickly reset. The problem is easily solved by the mass switch.

With its help, the electrical circuit can be de-energized instantaneously. In addition, the mass switch is an excellent way to protect the vehicle against theft, because a reasonably hidden switch button and a bonnet lock that prevents intruders from accessing the battery is a reliable protection. A bimetallic 4-amp fuse, installed in an electrical circuit in parallel, will enable the car alarm to operate even when the mass is off.

When selecting it is recommended to pay attention to the KamAZ weight switch, which is easy to control directly from the car's cabin - remotely. It works perfectly at 12 Volts, and in the old days KAMAZ switches were equipped with anti-theft systems of cars. The principle of operation is the immediate shutdown of the power supply.

You can install the remote earth switch yourself. To do this, in addition to the device itself, you will need a wire with crimp connectors, having a cross-section of 35 mm, thermal Glue in the gun, lead and seal rubber.

With the battery, you need to remove the negative terminal and remove the old "ground" wire. Find in the cabin an inconspicuous corner where you need to install a mass switch and make a small hole for wiring, covering the metal with an anti-corrosion compound and sealing it with rubber for mirrors. In the hole you need to enter the wire, and then seal it with glue. Wire connection isolate. This will prevent the formation of a short circuit in the circuit. It must be stretched along the body. Switch the mass switch securely.

Next, it is necessary to mount a low-current fuse and connect the case to the negative terminal of the battery, bypassing the mass switch, so that when the circuit is de-energized, the alarm system, computer and audio device continue to operate. If a powerful voltage in the circuit turns on or a short circuit occurs, the fuse will be damaged and the circuit will be de-energized.

It remains to perform work that will provide energy to the central lock, light and staff sound signals. To do this, connect an additional relay to the electrical circuit. With it, during the operation of these devices, the mass switch will be bypassed. Of course, this scheme is not easy for an inexperienced person in an auto electronics, so a specialist's advice here will be very handy.

After installing the device, always have spare bimetal fuses in stock, forgetting to switch off the starter one day, you can easily burn them. Fasten the wires with two toothed washers, and the lead terminal on the battery is regularly coated with lithol.