I purchased a Bachmann Large Scale Thomas and Friends sound board ($99) to install with my AirWire G3 decoder already installed in my Thomas.  The Bachmann install instructions do not cover this particular situation.  I emailed Soundtraxx who didn't know how to install the board.  I next emailed CVP Products.  They said it could be done with their CONVRTR-60X which is $138.  Bachmann customer support could not help me but did advise me to post the question on this forum.  Can anyone advise me on how to do this install?
Thanks,
Rex

I have a Spectrum 3 Truck Shay.  I converted it to battery power with Airwire control.  It has been running fine for two seasons until today.  The middle truck stopped.  The front and rear trucks are running.  I opened it up and checked my wiring.  The front and middle trucks have orange and green motor wires and are connected to the same decoder board terminals.  The front truck is running fine but the middle truck has stopped.  I reconnected the wires to confirm a good contact with negative results. 

My question:  How do a trouble shoot the middle truck's motor?  If it's bad how do I replace it?  I can't figure out how the trucks are connected to the chassis/tender.

Thanks for your help,

Rex

I'm converting my brand new Shay to battery RC.  The wiring diagram shows wiring to G824X-PCB04 but no indication of what the purpose is of this board.  The other boards either go to the trucks or the LED lighting.

Help,

Rex