What is the LED voltage rating for the headlight and taillight on a 5th gen Annie?  I am trying to determine if I can reuse the bulb when I install DCC or if I will have to swap it out.  

I am doing a dog bone with a reversing loop on each end. Now I know they have to be isolated and separately powered. Does the DCC unit automatically reverse polarity when it recognizes it or am I going to need to install something to reverse polarity?    I know in DC this was a tricky problem but if I understand it right DCC fixes the problem. 

I thought you guys might like to hear Tony's latest whistle modules. They allow you to add a prototypical whistle to a radio-controlled live steamer with very little effort - just plug it in and attach an 8ohm speaker. Remote Control Systems - Sound  

Very old LGB locomotives use 18 volt lights and smokers 18 - 24 volts........they lack the circuitry and voltage stabilization for using 5 volts lights and the smokers.  What device could I install into these older LGB locomotives to allow use of 5 volts devices?   I thought perhaps installing the Massoth Power Caps to provide continuous 18 volts input to these 18 volts lights or smokers but I don't think they would work without being connected to a DCC decoder.   I feel...