Just a heads up, you don't need he harness to wire them up. You can use your existing harness and just add a bulb socket and wire it in to your existing wiring. The factory 99/01 Cobra taillight harness isn't plug and play with the 03/04 cobra body harness.
Wow I thought you had to get the harness to make them work on an 03/04 cobra. Is there a guide to doing it without the 99/01 harness? Video, or walk through?