price for 1 complete block signal2mm LEDs mademay show Green/Amber/Red light.the black wire is Common Anode wire, the color wires are cathode wires.common cathode signals available if message me first.Specifications:Brand: WeHonest Model.Size: Please check it from the above photo.Reference Scale: Suitable for OO/HO scale layouts.Operating Voltage: 3V DC only. ( do NOT use it on 12V DC directly, must wire a 620 ohm resistor with the black wire if use on 12V DC )Operating Current for each light: 20mA.Material: copperyPackage included:1 complete common anode signal...