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Automobile Electronics

Automatic Vehicle Headlight Dipper/Dimmer Circuit

Last Updated on May 16, 2026 by Swagatam 56 Comments

AutomaticAutomobileLightDipperCircuitDiagram252CImage

The circuit described here can be built and used in your vehicle for an automatic dipping and dimming operation of the vehicle headlamps, in response to the intense lights coming from an opposite vehicle headlamps. What’s a Dimmer/Dipper in Automobiles An automobile headlight dimmer/dipper is a circuit which automatically switches the headlight intensities of vehicles arriving from […]

Filed Under: Automobile Electronics Tagged With: Automatic, Dimmer, Dipper, Headlight, Vehicle

Simple Ignition Code Lock Circuit for Automobile Protection

Last Updated on May 16, 2026 by Swagatam 15 Comments

codeswitch 1

This extremely simple code lock switch circuit can be used for locking a vehicle’s ignition by typing a hidden code over the given micro switch keypads. So now you can use this simple code lock ignition circuit for probably securing your car from a possible theft. Alternatively the circuit may be used for any application […]

Filed Under: Automobile Electronics Tagged With: Automobile, Code, Ignition, Lock, Protection, Simple

How to Make Car LED Chasing Tail Light, Brake Light Circuit

Last Updated on May 16, 2026 by Swagatam 83 Comments

LEDTailLight1

I am presenting a circuit design here in response to a request sent by one of the avid readers of this blog. The proposed circuit is of a sequential LED light driver, especially designed to suit the application of a multipurpose car tail light indicator. Circuit Connections The circuit is integrated to the brake switch […]

Filed Under: Automobile Electronics Tagged With: Brake, Chasing, LED, Light, Tail

Simple Capacitive Discharge Ignition (CDI) Circuit

Last Updated on May 16, 2026 by Swagatam 346 Comments

cdi

In this post I have explained the circuit for a simple, universal capacitive discharge ignition circuit or a CDI circuit using a standard ignition coil and a solid state SCR based circuit. For an audio/video explanation, you can watch the following video representation: How Ignition System in Vehicles Work The ignition process in any vehicle […]

Filed Under: Automobile Electronics Tagged With: Capacitive, CDI, Discharge, Ignition, Simple

Car Turn Signal Flasher Circuit with Lamp Malfunction Indicator

Last Updated on May 16, 2026 by Swagatam 24 Comments

carturnsignalindicatorcircuit

In this post I have explained an automotive/car turn signal indicator circuit idea with a built-in load malfunction indicator, meaning an additional LED lamp fitted on the dashboard which would warn if any of the side indicators went bad or fused. The idea was researched and requested by Mr. Abu-Hafss. The Circuit Concept I have found a transistor-based flasher including a […]

Filed Under: Automobile Electronics Tagged With: Flasher, Indicator, Lamp, Malfunction, Signal, Turn

2-Pin Motorcycle Turn Signal Flasher Indicator Circuit with Buzzer

Last Updated on May 16, 2026 by Swagatam 25 Comments

flasher

A simple construction procedure of a motorcycle electronic 2 pin turn signal indicator with beeper circuit has been thoroughly I have explained in this article. Normally, the electro-mechanical types of turn signal indicators are not reliable due to low consistency and vulnerability to changing weather conditions. The present design easily withstands the above parameters and […]

Filed Under: Automobile Electronics Tagged With: Buzzer, Flasher, Indicator, Motorcycle, Signal, Turn

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