How To Replace a Rear Brake, Turn Signal or Back Up Light Bulb

The bulbs in your brake light or tail light assembly are held in place using a plug that holds the bulb, that also screws into the light assembly. Follow the wires to the back of the light that you need to replace, that's the bulb holder you want to unscrew. It doesn't actually screw, it only takes a quarter turn or so to unseat it and pull it out.