Lionel Industrial Switcher Engine 6-18925 LED install.

This will help you. You need to put in the diode and determine the voltage dc that you are working with and then use the calculator. Other information on forward voltage and milliamps can be found here.

Dear John

A big thank you from Downstate NY (Hudson Valley) for your information.

For the flasher, you'll need a filtered DC supply, otherwise the flash won't work.  You can use a single protection diode for all three, use that in the lead that goes to ground.  You need a separate resistor for each LED.  Is this command or conventional?  Do you want directional lighting?

If it's conventional, I'd probably use the diode and a 220uf 35V capacitor to generate a filtered DC supply, then just string the three LED's with their individual resistors off that supply to frame ground.

Hi John

Thanks for your answer. I would like to install direction if that is possible.

Is this command or conventional?

HI John

Sorry, right now it is command.

Here is a reversing diagram used with bi-polar (Red/Green) LED's   TAS supplied a kit to add these to units.

If it's a command engine, it should have outputs for directional lights, what board is in it?

Hi Mike

Thanks for the information and the detailed scheme. 

Hi GRJ

I think I gave the wrong information I believe it is conventional.  It is the same board that came it came with. Here are some pictures of the board. 

Hi

Thank you GRJ, John H and Mike CT.

https://youtu.be/Fuysy2yMlKY