OK; I've built a ceiling train, with a 4 track yard; but until I get the webcams in, I can't 'see' my switch positions, nor can I always remember what position they were last in. So, I've gotten a bunch of bipolar 3 leg LEDs. I understand about the resistor in the circuit; & figure, 3 wires from the remote, 3 legs in the LED - should be a no brainer.
But I'd really like to hear from anyone who HAS done this - any suggestions?

Thanks,
Paul