how do you replace turn signal bulb?

Open the hood. On the underside of the fender where that light is(you can gain access from up top), is a nut. Take that nut off(I think it is a 12 or 13 mm). Once you do that, you can pull out the side marker light. Then you can remove the bulb and install a new one.

To install marker light, repeat same steps in reverse.