64-66 Mustang Tail Light Rebuild Kit - LED (Ultrabright) Utilizing our patent pending technology, the 1964-73 Mustang sequential LED kits are the ONLY kits on the market today which prevent sequencing during braking -- which is illegal in some areas. Simply stated when the turn signals are on the tail lights sequence -- Otherwise they don't! Each kit is warranted for the life of your car! LEDs last longer and look brighter and redder! Each kit is warranted for the life of your car!