Review on Super Bright LUYED LED Bulbs with Projector: 2 X 900 Lumens, 78-EX Chipsets for Turn Signal, Amber - 3056, 3156, 3057, 3157 by Petr Webster

I originally bought Slyvania Zevo bulbs but they didn't work at all in my turn signals. My turn signal reflector design shows the brightest with them. A 2003 Ford F-150 requires multiple light sources in the form of these types of LED bulbs to get the right reflection and resulting brightness when viewed from the side. You also need an end reflector and a bulb to shine straight ahead so you can see it from the front. Works fine after a few months - no problems. And I use the turn signal LED module, not the original one.