It depends on the hookup in the vehicle. If it is accessable for us to get to.
A lot depends on the make and model car you have. Some vehicles you will have to remove the front bumper cover To get at the bulb. BMW and Chrysler are well known for their hard to get at head lamps. If you respond with make and model I can answer your questions better.
I concur with Jay Jones
My rear signal light bulb was replaced at Auto zone by one of the workers
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