Thanks for all the recommendations.  Lots of interesting options there. 

 

Besides the size difference (which to makes the EZ-41 N-scale module more attractive for my HO cabeese) is there any other reason why one should prefer the Richmond Controls EZ-31 HO caboose module for HO equipment?  <http://www.richmondcontrols.com/>

 

Rob Kirkham

Nice ... micro-size, nearly invisible, LED's now available can
be used for class lights and step lights too, they are that small!
We're going to need more DCC functions ! :-)

Tim O'Connor

You can also check my website:
http://ssandifer.com/Lay/Howard/Const/LEDMarker/Index.htm
I used Jim's flicker free design.