Project 3 & 3A
HO Passenger Car LED Lighting
This project describes a simple circuit designed to illuminate HO scale passenger cars, locomotive or buildings using a constant current and non flickering LED lighting  system with electric pickup from the track. Also Instructions for Cars with electric pickup already installed (3A)


Youtube Video: Installing constant, bidirectional lighting in HO Passenger car




            Passenger Car Lighting                 Assembling the LED  Driver

Project 3A Adding LEDs to Cars with electric pickup installed