Switchback LED lights are also known as
dual-color LED which are dual-function LED bulbs or LED strips that stay
lit as Xenon White as parking/position light mode and flash Amber when
the turn signals are used. These are specifically designed for cars use
for front turn signal lights or daytime running lights.
This kind of switchback LED will give you
a nice HID-matching look when operating as the parking lights and still
stay legal by flashing Amber when the turn signals are used!