Each unit adds 6 bright white running LEDs and 6 amber turn signal LEDs. Direct bolt on installation for 1-1/4 engine guards. Includes plug and play wire harness for simple installation. Mounting hardware included. No drilling required. Die-cast aluminum housing. 4-7/8″ long. Universal fitment, but they are not for use with Harley Davidson engine guards kits (OEM# 49000138/49000139) for Softail models due to the bending mounting surface of these engine guards.. Requires straight mounting area..