Make Your Own Simple 'Headlights On' Alarm

[@AhilMohan]

Good idea to wire to tail light rather than headlight, as it will turn on with parkers

[@adamadams9645]

Thank you

[@FragBenitez]

Great explanation, thanks a lot

[@llanzafa]

Good work

[@alvaroorrego4591]

Excellent explanation. How could it be connected if I want it to work when I turn off the ignition switch, regardless of whether the door is open or closed?

[@the_bmx_tim2815]

I would imagine it would be the same as shown, but instead of the negative end of the buzzer going to the front part of the interior light wiring, it would go into the ignition wiring at the off switch

[@glenmerwyn5195]

Wire the negative wire of the buzzer to a circuit that only comes on when the keys are in and turned a click - such a the cigarette lighter circuit. Then it's synchronized with your keys. (Positive wire is connected to the headlight circuit, and only powers the buzzer if the headlights are on and keys turned off).

[@ton3570]

What could be the problem if there is a beeping sound when the headlight is switched on? That is even if the doors are close and/or the car is running

[@ashmill743]

All good until you have a negatively switched vehicle such as a Toyota hilux

[@the_bmx_tim2815]

Probably same thing with an old Tercel 😳