Car Indicator Circuit Diagram. Current travels from terminal b of the unit through the actuating wire ballast resistor coil on the armature and through the flasher lamps back to the battery by way of earth. The 1n4148 diode is connected in reverse bias at the output pin of 555 timer ic to maintain a constant current.
Later the 4 terminal flasher relay was replaced with a. There are hundreds of switches lamps and relays available and hundreds of ways to wire them. The problem is there is no single universal way to do it.
The ic1 is wired as an astable multivibrator to trigger the counter ic.
The idea was researched and requested by mr. Power flows through the filament of the lights and then is grounded. The circuit diagram can be divided into two sections the first consists of the led driver stage where the ic 4017 forms the main led sequencer and is configured in its usual counter divider mode. This is a simple circuit that can be used as a sequential signal light in automobiles.
