Multiple choice general knowledge A electronic part used in a Bike for switching ON & OFF[blink] sidelights. RECTIFIER BATTERY COIL FLASHER Reveal answer Fill a bubble to check yourself D Correct answer Explanation A flasher unit (or flasher relay) is an electronic component that creates the blinking or flashing effect in turn signals and hazard lights. It controls the on/off cycling of sidelights and indicators by repeatedly opening and closing the circuit.