Chase Flash Module Boxes 3 Step Sequential Universal for Car Turn Signal Light Ford MustangProduct Description Product features (2) module boxes that convert your front or rear turn signals' standard flashing action to successive lighting. Each package includes 2 pieces 3 step sequential modules boxes, for both driver side and passenger side. With the successional flash module box installed, your car's turn signal lights will get three sequential outputs with each flashing about 0. 28 seconds for a full turn signal rotation of 0. 85