yeah the regular smd leds don't really work in my '05 trunk. dim flickering from most & other types of leds not bright enough. i might try a blue (cool white) filament bulb
i've swapped out interior bulbs for LED's from
superbrightLEDs.com and i've had no problem with heat. if you shoot them an email they know their stuff. I was ordering from them when i was doing service work back in the day.