Are the heatsinks for the LEDs? I don't know much about car LED lights but just recently was reading up on some LED's an I guess an issue with the blinkers as they blink too fast, I guess due to not enough resistance. So I think they have a resistor mounted on a heatsink which mounts in the engine bay to fix the blinker problem.
It is, the LED headlamps I've used in cars have some beefy heatsinks on them.
Are the heatsinks for the LEDs? I don't know much about car LED lights but just recently was reading up on some LED's an I guess an issue with the blinkers as they blink too fast, I guess due to not enough resistance. So I think they have a resistor mounted on a heatsink which mounts in the engine bay to fix the blinker problem.