The idea of creating and using such devices to protect your car is by no means new. On the Internet you can find many articles on this subject, although all the schemes used are similar. Before the acquisition of Lada Kalina 2, the author had car VAZ 321074, where he had already set up a similar security system and it worked well. In order to create the same on a new machine, he had to seek advice from more experienced Kalinovodov.
Materials:
- reed switch
- magnet
- rubber gasket
- the wire
- connector from computer power supply
- electrical tape
Description of the manufacture of a security device for a gas tank hatch.
The author saw videos on the Internet, as "craftsmen" pour bezin from Kalina, which is tucked into a full tank, although it was not possible to do this myself, but it’s better to play it safe and provide the gas tank with a security alarm.
First you need to find the right reed switch. There are several types, depending on the principle of operation. they are closed when the contact opens when the magnet is brought to the reed switch. There are open - when you bring the magnet, the contact closes. There is also a mixed or complex type, when one is closed and the second is open, and when the magnet is presented, they change places.
For this device, a closed reed switch is needed. That is, it must be connected in such a way that the magnet opens the contacts.
Reed switch can be fixed with superglue directly to the car body, and this is best done in the most inconspicuous and inaccessible place so that the cracker does not notice it ahead of time.
Reed switch in the hatch
Appearance and content of reed switch
Due to the fact that the reed switch itself is located quite deep beyond the edge of the hatch, the author decided to glue a small piece of square rubber under it.
The system used a magnet, which was taken from a non-working computer hard drive.
Next, a hole was drilled in the hatch through which the wires would go. This hole was then coated with silicone sealant.
Yes, the body will have to be drilled if you want to protect your car, the author did not find other options for pulling the wire.
Hatch hole
View from the inside of the car Lada Kalina 2.
Wires are held under the skin of the car as follows:
Then the wire is laid to the rear passenger door.
The wire is mounted on electrical tape so that it is held in one position and is not frayed.
Then this wire goes to connect to the car door open sensor.
Connecting the reed switch parallel to the trailer:
The trailer was borrowed from the global network:
As you can see, the trailer has two wires from the connector.
This is what the trailer with the connector looks like:
The connector is installed necessarily (mom-dad) in case the sensor suddenly fails, or you need to check the operability of the door limit switch.
The author also borrowed the connector from the computer wire. Insulation The connection of the connector was made using a blue insulating tape.
More precisely, the connector was cut off from an unused power supply.
Here it is better seen due to a more convenient shooting angle:
Connection to the rear door limit switch is shown in more detail.
And here is the trailer in the door:
All wires after checking the operation of the device were sealed and removed under the car skin and door rubber.
After all the work, it is best to take the paint and paint over the sealant, reed switch, magnet, in general, mask everything so that it does not stand out from the big picture.
If you are interested in this device, or if you have questions, you can familiarize yourself with the video material attached below, as well as follow the source link to familiarize yourself with the original article.