Features:100% Brand new and high quality.Perfect for Railway & Building Layout!Great accessories for diorama, buildings, train models.Prewired quality products.Lights include red, green and yellow LEDs.Each line corresponds to the color of the glowing colors, the green line is the green LED, the red line is the red LED, the yellow line is the yellow LED.Black wire with positive, and the other three with negative.You must connect a resistor in series before you will use them on 12V or 16V, I will supply compatible resistors for free.Specifications:Brand:evemodel.Size: Please see the picture.Style:Green,red,yellow.Reference Scale: 1:87,Suitable for HO scale.Operating Voltage: 12V, AC or DC Compatible.Operating Current: 20mA.Material: Plastic.Package included: 3 complete lamps,including 3 Resistors for 9~18V operation.