BUlb sizes

[ernhrdt34]

I need to replace the bulds in the doors and dome lights in my car and im not sure what sizes i need to get or what stores would carry them in color. i want to do blue int. lighting just cant find a store carring the bulbs and i dont know the size because they were missing when i bought the car.

[DBMaster]

They are the shortest "festoon" (looks like an old glass fuse) bulbs - I think 31mm. Anyway, I have seen a good selection of standard, color incadescent, and color LED festoon bulbs at my local Pep Boys.