This is a car signal light training kit for understanding car signal light system. The main purpose of this trainer kit is to present how the signal sight system works in any vehicle. The signal switch(or lever) of any car or vehicle usually located in the right side under the steering wheel. When the signal lever is pushed or pulled, the turn signaling system become activated and hold until the steering is not turning on the other direction. The trigger signal goes to a Flasher relay. The relay drives the signal lights. Here we are using two flasher relay for understanding. But in real operation, only one flasher relay is enough.