Now catching up on some projects in the train room including replacing the number board lights. I got the LED lights wired up with a 470 ohm resistor as recommended and installed. Here's the catch, when track power is applied the LED lights go on for less than a second and then shut off completely. All solder joints are firm and I tested the lights before installing them. Everything else with the locomotive works just fine.
Any further input on this would be appreciated and thanks again to all who have contributed for your help.