I don’t understand why anyone would use LED that requires a supplemental resistor.
Resistor converts electrical energy into thermal energy. It heats up, probably not hot enough to damage adjacent equipment, but 140-150F is not uncommon. The extra current draw will offset the efficiency advantage of the LED bulb. Unless you carefully spec your resistor there’s really no easy way of knowing if you are actually drawing more power than the incandescent.
LEDs are great. I am using them throughout the interior and for the headlights, fog lights, and reverse lights on my 2001 Yukon. But I’ll stick to OEM spec incandescents for the flashers and brake lamps that need a resistive circuit to work properly. What am I missing ? Brighter? I’m not sure how much benefit there it to brighter flashers and brake lights as long as they are bright enough.