Where do you access the rear of a 1995 mustang blinker light?

To access the rear blinker light (turn signal) on a 1995 Mustang, you'll need to access it from inside the trunk. There's a panel covering the taillight assemblies. You'll need to remove this panel (usually held in place by clips or screws, check your owner's manual if you have one), then you can access the bulbs and sockets for the blinker and taillight.