The article on our club web site about adding radio control and battery power in an Aristo-Craft GP-40 was updated. The instructions are more thorough and more pictures were added for clarity sake.
If you are fortunate enough to have a Revolution receiver with diesel sounds, sound can be added easily while the locomotive is open as the GP-40 has a speaker already wired to the Plug and Play socket.
To view the article, just click on the http://ovgrs.editme.com/Geep40 link.