I just installed Airwire in my Williams K4 3 rail engine. I use rectified track power and the G3 decoder powers the engine fine, but the sound cuts out below throttle level 3, and I can't get the chuff sound to work. Airwire says to connect only the red and black wires from the tsunami to the G3 and that was what I did. Any ideas what's wrong with the chuff?
Thanks