The top left pin is for normally closed the bottom left is normally open the top right pin and bottom right pins are for powering the coil 12v applied here flips the relay from closed to open. It costs less than 1000 is easy to make and very effective.
4x4 Icon Headlight Driving Light Warning System
Headlight buzzer wiring diagram. It requires an automotive relay readily available at automotive supply stores and a 12 volt pezio buzzer from radio shack. Headlight warning alarm diy 3 never leave your headlights on again a do it yourself diy plug in device. On the relay picture below. The diagram shows the relay pins as viewed from the pin end of the relay. The working of headlight alarm circuit in figure 2. The voltage at switch should of 0 volts or state is 0.
The piezo buzzer works like a diode only passing current in one these will then be polanzed so you have to connect the positive wire to battery positiz nice thing about ths is that you do not need a relay for applicatiotl. If preferred the headlight power connection could be connected to park light power instead which will alarm if headlights or park lights are left on. This is a wiring diagram for a headlight reminder to tell you that you have left your lights on when you turn your ignition switch off. So the only time the buzzer could possibly work is when the truck is off and the headlights are on. Rotate the car ignition key switch to stop the engine. All that is required is an automotive change over relay and a buzzer.
This circuit use all nand gate we see the conditions that the buzzer has three reasons. If engine not works also no voltage to charges the car battery. Buy piezo buzzer here httpamznto2gopeaf just a quick how to on making a reminder for headlights being left on while vehicle is not running. How to wire a buzzer that will tell you when youve left your lights on. Simple headlights on alarm reminder warning buzzer circuit 2001 2005 honda civic duration.
Gallery of Headlight Buzzer Wiring Diagram
