Got my son a N scale Bachmann train set with powered switches for Christmas. We are making  simple oval track with the switches inside the loop to have an inner loop. Very, very simple design. The switches work single, but when tied together only one will work. On the back of the switch package, it shows moving a wire for "powering the frog". Do I need to do this, or will I fry out the engine/do something else bad? He is too excited for this train for me to break it the day after Christmas.

In advance, thanks!

Matt