Details about the lights themselves:
I purchased the LEDs and other wiring from a company in the US called Evan Designs. Their website is
http://www.modeltrainsoftware.com/ledlights1.htmlFor this project I used 10 of the Warm White 1.8mm sized LED lights on 14 inch wires
1 of the 9 volt battery with switch sets
They offer various other lights and another interesting battery option using a watch battery
You can see one of those in use here where I've used a warm white chip LED on the little battery set under the umbrella of the ice cream cart.
Carnival 45 by
Tim, on Flickr
That's all it took for this project, and I think the results are well worth the effort if you are doing night or evening scenes.