We already changed the headlights and the tail lights to enhance the 2001 V6 Mustang. The 3rd brake light was really faded and so it was time to change it out also. I was going to replace it with a Ford one until I noticed how expensive they were. At that price Ford must be about to discontinue them so I started checking other options. We chose the SDT-13613B smoked LED third brake light, which is super bright when lit and dark when unlit to match the black car perfectly.

1999-04 Mustang Smoked LED Third Brake Light - #SDT-13613B - $74.99

For installation you will need to open the trunk and look at the underside of the lid. The first thing that I did was remove the trunk light bulb because it will get hot really quick and you will have to remove it later. You will need a 10mm socket to remove the nuts that hold the housing on.

After removing the 3rd brake light, you will need to twist the connectors to remove them from the housing, including the socket for the trunk light.

I separated the harness from the vehicle by disconnecting the connector inside the trunk lid on the left side, and took the harness to the work bench. You will need to peel the backing off the new rubber seal and place it on the new assembly to seal out the weather.  The light bulbs are all taken out and then the LED connectors simply plug into the connectors. I tucked all the wires into the new assembly as the pictures show.

Connect the harness back to car and install the light back into the lid. Tighten up the nuts and reinstall the trunk light bulb.  You are done and ready to test them. They are bright and the dark lens looks awesome.

Check them out with the LED tail lights as well.

 I am happy with the choice. The LED's really show up well at night and were easy to install. It really makes my Mustang look new again!