Clever Anti-Theft Device with Your Own Hands from Auto Electrician Sergey Zaitsev
Do-it-yourself anti-theft device based on a reed switch is a budget and effective means for additional protection of your car!
✅ Reed switch - https://s.click.aliexpress.com/e/_DFS...
✅ Relay with two groups of changeover contacts - https://s.click.aliexpress.com/e/_Dm8...
✅ Stripper - https://s.click.aliexpress.com/e/_DF1...
✅ Magnet - https://s.click.aliexpress.com/e/_DDc...
✅ Hot glue gun - https://s.click.aliexpress.com/e/_DDi...
✅ Electrical tape - https://s.click.aliexpress.com/e/_DeG...
Playlist with other options for secret buttons: • Секретна кнопка на авто - Прихована протиу...
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0:00 - Circuit diagram of a secret button with a reed switch - https://s.click.aliexpress.com/e/_DFS..., based on a relay with two groups of changeover contacts - https://s.click.aliexpress.com/e/_Dm8.... I use a GP-12VDC-2C54 relay for 12 V, with two groups of contacts, each for 8 A. I show the principle of operation of the anti-theft device.
2:56 - Soldering the secret. I use solder and flux. One contact will go to ground - black wire. The yellow-white wire will go to the ignition, which I solder to the normally open contact. A double wire, gray and black, will go from the same contact to the reed switch. The black wire of the reed switch should return to the coil and the second changeover contact. I solder the yellow-black wire, which goes to the blocking circuit, to the normally open contact. Beforehand, I bent all the relay legs so that they would not pierce the electrical tape with which I wrapped the relay itself.
4:45 - Now the relay wires can be wound up and checked for functionality. To do this, I attach the reed switch to the relay, connect the multimeter and apply "plus" and "minus". If the anti-theft device is successfully unlocked, the multimeter should start beeping. The circuit will be closed until the power is disconnected. The larger the magnet, the greater the distance at which the reed switch will be triggered.
7:53 - Where to install the anti-theft device on the reed switch?
Alternatively, you can hide the reed switch under the card trim. If the card has a pocket, then attach a reed switch near it, and put a magnet in a certain place in the pocket. If there are 2 cup holders, then you can glue a magnet to one of the cups, and attach a reed switch to the inside of the cup holder - by moving the cup with the magnet, we will control the anti-theft system.
9:35 - In the client's car, I blocked the power supply to the injectors. I attached the anti-theft relay under the hood, near the fuse box. I also pulled two wires from the reed switch there. I make the necessary connections to the unit - ignition and ground. I soldered the connections and insulated them with heat-insulated cambric with an adhesive base.
10:35 - I agreed with the client on installing the reed switch on the inside of the door card. I secured it with hot glue. I made 2 contacts for the reed switch so that if necessary, I could easily remove the card. I pulled the wires into the door and also crimped 2 contacts. The wires in the door went along the standard harness, passed through the corrugated pipe and through the connector. In the cabin, they went to the hood cable, and from there, through the rubber band, under the hood of the car.
11:52 - How the anti-theft device on the reed switch works. I try to start the car without a magnet. The starter turns - the car does not start. I bring the magnet to the right place. The locking circuit is unlocked - the car starts.
12:51 - One more thing about this secret. I connected to the power wire, on which the plus disappears after a certain time. If the car stalls on the road, for example, when driving over a speed bump, then it can be started without using a magnet.
It is very easy to make such an anti-theft device with your own hands, I gave all the necessary information in the video. If you have any questions or comments - write them in the comments to this video!
Auto electrician Sergey Zaitsev worked for you!
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