* The White and Yellow has two functions,

DRL and the turn signals.

When you aredrivingstraight,

it lights up white.

Whenyouturnit flashingyellow light.

* The White Yellow Blue has three functions,

DRL and the turn signals and night blue.

When youare drivingstraight,

it lights up white.

Whenyouturnit flashingyellow light.

When you turn onheadlight,it lights up blue.