Chosen Solution
Hello, My left tail light does not work. Bulb works fine. Break works fine. Horn works fine. I am not sure why just the tail light is not working. Mazda 3 2008.
Qossay Takroori did you make sure that the bulb is the right bulb? The contacts are different on different bulbs. If the bulb is right, check the contacts with a mutlimeter and see if you have power on that. The contact inside the connector is positive, use some bare metal as ground. If you do not have power on the connector, check the harness to make sure it is not severed somewhere.
