--- Clear / LED Front Side-Markers       Porsche Boxster (97-04) LED Front Side-Markers - Matte-Black Finish Porsche Boxster (97-04) LED Front Side-Markers - Parking Light   Porsche Boxster (97-04) LED Front Side-Markers - Signal Light     Difference between single & dual function configurations: Single Function LED: choice of white or amber LEDs. This side-marker can be wired as a parking lamp or as a signal, but not both. Dual Function LED: uses one strip of white LEDs for parking lamp function, secondary strip of amber LEDs for side-signal functionality.