Here's a close-up of the 1157 LED
There are 3 LEDs on the tip, and 5 columns of 2 LEDs around the perimeter, for 360 degrees of illumination.

This style of LED replacement 1157 is the only style that really is effective at providing proper illumination in a fixture designed for incandescent bulbs because it radiates light 360 degrees.

It uses "wide angle" LEDs to enhance the light pattern

Comparison photo, tail lights ON (not brake lights)

The right tail light has the newly installed LED in it. Left tail light still uses the old school incandescent bulb.