How do I open the tender on a 4-8-4 Niagara to change the DCC decoder? thanks.
John C
http://www.bachmanntrains.com/home-usa/dwg/dwgs/H503X-IS001.PDF
This link is a diagram of the Niagara, including tender. It appears there is a screw at the front of the tender, which will release the front panel, exposing the interior. That's a guess as I don't own one, yet.
Regards,
Jonathan