Originally Posted by 1stockjeep
This is a long shot but on some cars u have to run a resistor for rear led lights. Honestly it may not be the issue but if u have 2 stock bulbs try them just to see. If I remember the led bulbs just blink fast cause such low voltage cars think the bulb is burned out
Correct, the flasher must feed at least 40 watts to blink at the right interval, it warns you by blinking fast in case of a blown bulb.
There are electronic flashers that always blink at the same interval no matter how many watts is drawn but than again you have no control over a blown bulb.