I am building some block signals with he mini lights I bought. two lights per signal in series to work on track power. They don't change, have green over red at present but wll make all red too. Using 1/8" pipe plus some black tape for my low budget RR layout. I have Lionel signals but not wired in yet. Have been thinking about street lighs. my layout doesn't have good lighting for at night- a 30 ft. ceiling limits your options.