i am making this http://www.re-energy.ca/ridethewind/buildamodel-2.shtml and was just wondering where i would attach the two wires of a small lightbulb to

(may be broke/outdated!)
i am making this http://www.re-energy.ca/ridethewind/buildamodel-2.shtml and was just wondering where i would attach the two wires of a small lightbulb to