dummy light replacement?

hi, i have a 1995 buick century, and im replacing my gauge lighting. i replaced my dummy lights, and when i replaced my brake warning light with an led, it was glowing very dimmly with the brake not applied, but once i engaged the emergency brake it came on full. it does it with my traction active and air bag light as well. it seems to me like a leak somewhere, because when i had put leds in my dome light, they were on real real dim as well, and when i pressed the horn, the leds got a bit brighter. im just wondering if theres a way at the led to supress this voltage.

did your put resistors on the leds or the right kind, maybe just try a higher resistor, that should work