Above is a 9LED LED G4 bulb with 6pcs Warm White and 3pcs Red LED. No need for big double bulb fixtures and 3-way switches. This is all accomplished using a digital latching technique within the bulb’s microprocessor electronics. The bulb senses each toggle of the switch and latches into the Warm White mode if the switch is toggled off-on within 3 seconds. To revert to Red mode is a simple off and back on with a 3 second delay.
It is your choice whether you want Red or Warm White, and the control is all done using your existing switches.
If you want other color mix, like, Blue/White, Red/White, this is also available.
There are dual color switchback LED car bulbs. The new switchback design makes it perfect for turn signal lights.