With 6-pin Molex connector. Plug & Play installation. Used to correct the fast flashing when replacing regular incandescent turn signals with LED turn signals. Not a resistor type so it functions virtually heat-less. Dimensions: 3-1/2″ (8.9cm) long x 1-1/8″ (2.9cm) wide x 5/8″ (15.8mm) thick. Wiring length 11″ (27.9cm). Note: Not required for CAN-bus models.