i have a 2000 audi a4 and my top passenger rear light does not work. i checked and there was no bulb in it. i tried to put one in and realized that the whole is too small for the bulb i was told to get so i made the whole bigger. when i put the same bulb in as the left lamp none of the brake lights worked. i just need to know if there is a bulb that is supposed to go in there or not. i dont want the risk of driving with a tail lamp out. thanks