Lights, wires, switch, and a flasher/controller unit.
Some LED lights will self sync and have selectable flash pattern with no flasher/controller unit required, most do not.
Total US debt has increased by 70% under Obama, from $10.625 trillion on January 21, 2009 to $18.005 trillion January 1, 2015.
Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ......
Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.