need to replace constant directional lighting unit in samhongsa steam loco

Model Railroader General Discussion (Model Railroader)
1

I have a 2-8-0 steam locootive that the tender light will not work. what is a good light unit to put in this thing. I dont crap all over the place inside.I want to keep neat and clean

thanks Richard

2

Most of us are switching to LEDs. 3mm is about the right size for an HO light. You will need to use a resistor in series with it. The value of the resistor depends on the kind of LED you get. If you use a bright white type, you can use 1000 ohms with 12 volts DC. If you use a golden white type, the manufacturer should tell you what value to resistor to use. I have some golden white type LEDs I got from NCE and they recommended 5000 ohms with 12 volts DC.

How messy the installation is depends on the wiring and modeling skills that you have.

3

You might try this circuit: http://www.pollensoftware.com/railroad/circuit.html I have several in use, and it works great. It’s not in series with the motor, so there’s no voltage drop to the motor. Read through the entire article, and be sure to follow his directions.

4

Some useful info:

http://www.awrr.com/ConstantLighting.html