This assembly replaces your stock bulb and parking light lens. Easily plug in just like a regular bulb!!! No Modifications required! Amber Polycarbonate Lens looks like the original. 48 Super Bright LED's are fully sealed inside the lens assembly. Not recommended for 65 Mustangs with the long style speedometer with the single turn signal indicator in dash. Manufacturer recommends using our IN8011 Flasher Assembly with these units.