Cars without alarms (without a visible LED deterrent for thieves) are often subject to theft or vandalism. Today, we partially solved the problem of car theft without alarms.

Supplies

Take old quartz watches with a similar clock mechanism.

Step 1: Extract and Disassemble the Mechanism.

Don't discard the gears they may come in handy someday.

Step 2: Break Off the Coil From the Housing and Disconnect the Wires.

We need this electronic board today!

Step 3: My Box of LEDs. Choosing the Blue Color, Commonly Used in Car Alarms.

The short leg of the LED is negative (-). The long leg of the LED is positive (+).

Step 4: The Contact Closer to the Black Dot on the Circuit Board Is Negative, and the One Farther From the Edge of the Board Is Positive.

Extend the distance between the wires and connect the LED. If it still doesn't work, swap the polarity of the plus and minus; your board may differ slightly from mine.

Step 5: Place the LED in the Hole Meant for the Arrows and Glue It With Thermoglue.

Install the microchip in its place.

Close the case.

Step 6: The Blue LED Has 3.2 Volts, So We Use 2 Batteries to Power It.

AAA 1.5 V (LR03) battery and another LR44 1.5 V battery. In total, 3 volts is sufficient!

Pay attention to the polarity, don't mix up the positive and negative poles.

Step 7: Now, Let's See What a Thief Pays Attention to Before Stealing or Robbing a Car.

He doesn't see the glowing indicator that the car has an alarm, and he can steal it without risk in 30 seconds.

https://youtu.be/vKqynCUV8B4?si=IqH9-3MW5EqF2cnO&t=303

Step 8: Now, Let's Place Our Fake Alarm Indicator on the Dashboard.

The indicator exactly matches the flashing of a real alarm with a frequency of one flash per second. We achieved this thanks to the clock hand, which is programmed to move once per second.

https://youtu.be/vKqynCUV8B4?si=eZbQCl1d7xq_Afg7&t=337

As you can see, vandals or inexperienced thieves won't dare touch your car when they see the signaling beacon indicating that the car is alarmed. And in the dark, it looks even more realistic!