Will I need LED Decoders? Is your LED bulb blinking too fast? No worries—it’s an easy fix! LED lighting draws much less power and lasts way longer than standard incandescent lighting that comes stock with most vehicles. Although the reduced draw of LEDs has advantages, replacement of turn signal bulbs with LEDS will cause what is called hyperflashing. Hyperflashing is when the turn signals blink faster than your stock incandescent bulbs did. This happens because your new LED bulbs draw such little power that your turn signal relay sees the bulbs as being out.
in this case you will require Decoders or resistor kits.