John, you said your first rail truck works fine and you enjoy the sound.  What sound system/decoder do you have in the truck?  What about a speaker -- how big.  How difficult was the sound installation?

The Precision Craft rail bus has a great sound system -- although each time it starts you wonder if it will crank over.  I bought a second rail bus and plan to install the unit into a Bachmann combine per the article in the 2009 On30 Annual.

Thanks for insights into installation of sound in the rail truck.

Monte

Has anyone added sound to the railbus?  What decoder did you use?