This LED light should be brighter than your 921 incandescent bulb and will use much less current and produce much less heat. Note that this is 10 lights.
Look thru the seller's store to find other options or to buy a single light.
FYI, this uses the 5050 LED. Similar lights are available with the 1210/3528 LED. The 1210 uses about half the current and is about half as bright so an equivalent light using 1210 LEDs would require about twice the number of LEDs.
PS. The glass bulb pulls straight out of the plastic socket.
Class C, 2004/5 Four Winds Dutchman Express 28A, Chevy chassis
2010 Subaru Impreza Sedan
Camped in 45 states, 7 Provinces and 1 Territory