How does the mains switch keep the car safe?

How does the mains switch keep the car safe?
How does the mains switch keep the car safe?
Anonim

Manufacturers place batteries either in the luggage compartment, or under the rear seat, or in another secluded place that is difficult to access. If a short circuit occurs in the vehicle's electrical wiring, a fire breaks out, in which it is very difficult to save the car, since it is not possible to quickly reset the terminal. The problem is easily solved by a mass switch.

Mass switch
Mass switch

With it, the electrical circuit can be de-energized instantly. In addition, the mass switch is a great opportunity to protect the vehicle from theft, because the intelligently hidden switch button and the lock on the hood, which prevents intruders from accessing the battery, are reliable protection. A 4 amp bimetallic fuse installed in parallel in the electrical circuit will enable the car alarm to work even when the mass is turned off.

When choosing, it is recommended to pay attention to the KamAZ mass switch, which is easy to control directly from the cab of the car - remotely. It works fine at 12 volts, and in the old days, KAMAZ mass switches were used to complete the anti-theft systems of cars. The principle of operation is to turn off the power immediately.

You can install a remote mass 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

Mass switch KAMAZ
Mass switch KAMAZ

glue in the gun, lead terminal and sealing rubber.

Remove the negative terminal from the battery and remove the old ground wire. Find an inconspicuous corner in the cabin where you should 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. You need to insert the wire into the hole, and then seal it with glue. Insulate the wire connection. This will prevent the formation of a short circuit in the circuit. It must be stretched along the body. The mass switch must be securely fixed.

mass switch kamaz
mass switch kamaz

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

It remains to complete the work that will provide energy to the central locking, light and regular sound signals. To do this, you need to 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 toan inexperienced person in auto electrics, so the advice of a specialist here will be very helpful.

Having installed the device, always have spare bimetallic fuses in stock, forgetting to turn off the starter once, you can easily burn them. Fasten the wires with two toothed washers, and regularly coat the lead terminal on the battery with lithol.

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