Bachmann Big hauler passenger car set with LED light strips installed. B&O New York, Philadelphia, Baltimore & Washington Royal Blue train car set. The 6 cars in the video and photos. 2 dummy AA batteries. 4 cars have metal wheels. The cars are in great used condition. See pictures for further condition details. These cars use battery power and have amber color LEDs. One half dead 9v can easily light all 6 cars. Also included is a AA battery 8-pack power supply that hooks up in the combine to get brighter lighting during day and dusk. The flexibility in brightness is nice. 8AA batteries gives around 12 volts, or you can use 6 AA batteries with the two dummy batteries that are included to get around 9 volts. The cars are wired and have JST connectors between each car so you don’t have to put a 9 volt in each car per the original design, but you still could for 5 of the 6 cars if you wanted to and not use the connectors between the cars.