Constant current is more expensive and does not scale to a lot of LEDs or high power LEDs well. The scale wouldn’t be an issue with the tail lights, but the pow

Constant current is more expensive and does not scale to a lot of LEDs or high power LEDs well. The scale wouldn’t be an issue with the tail lights, but the power kind of is. Take a look at modern taillights sometime, they all have heatsinks on them. I’m sure there are some; but I am not aware of any constant current taillights.