The White and Yellow has two functions, DRL and the turn signals. When you are

drivingstraight, it lights up white. Whenyouturnit flashingyellow light.

The White Yellow Blue has three functions, DRL and the turn signals and night blue. When you

aredrivingstraight, it lights up white. Whenyouturnit flashingyellow light.When you turn on

headlight,it lights up blue