I'm relatively new to model railroading and have been focusing on building structures, so I don't have a layout or track down yet. Just a general idea of what I want to do and where things will go. My question is.... in the structures I've done so far, I'd like to add lighting and have them all ready to go once the track is down. How can/should I wire these so that they'll work when I'm ready to use them without much modification? Also, is there a way I can temporarily hook them up to a power supply to see my progess? What's involved in that?