We'd need more info but the short answer is a pair of buss wires that the lighting taps off of .
You have to be careful though because very often you'll have several different voltage lights, requiring a different value resistor for each voltage at the point the light taps into the buss..
Springfield PA
How do I light up so many buildings and light post with few wires becasue I dont have much room and I dont want many exsposed wires.