Hey i have a bulb that was missing from my passenger rear lighting. I took the bulb out of the drivers side GE1057, autozone replacement was SY7507. I bought the 2 pack and put the new bulb in drivers side it worked fine, but when i put the bulb in the passenger it doesnt work. I think its the parking light. If u pull the entire harness out its the bottom row third bulb. The light is supposed to come on when u pull the switch two times. Thanks guys.
