When incandescent light bulbs are replaced by LEDs in the headlights of the car, vehicle On-Board Computer generates error because that LEDs consume less power. Additional to this error, the frequency of the turn signal is increased. To correct operation of the On-Board Computer or to prevent incorrect work of relays, we have to simulate a load equal to incandescent bulbs. Usually used for this purpose “LEDs load resistors” and “Dummy resistors“.
But those solutions have several serious disadvantages such as – inability of the On-Board Computer to detect LED’s failure due to load resistor and the overheating of the load resistors.