I am confused on how many types of bulbs. When I open the radio I see a lot of tiny red LEDs and the bigger clear bulbs. Are the big bulbs the Delco bulbs? I am assuming the tiny red LED must be the Micro Lamps part# 272-1092? If so why are they not red?

I see Radio Shack part# 272-1092 and the 272-1154 bulbs. Can you tell me which ones go where?