Thanks to everyone that responded. I was finally able to get into both tenders. Here is what I have found for everyone's general information. The Spectrum long tender has pins to accept a 6 or 8 pin decoder. Also, the board sits low enough that the contacts from the trucks rub onto brass springs mounted to the board. The 2-4-0 tender's decoder is hardwired and the trucks contact brass springs attached to the floor of the tender and wired to the board. Not going to be an easy swap as I had hoped. While I'm no stranger to electronics, I am somewhat of a novice when it comes to decoder installation. I'm a bit confused about plugging a decoder into the pins. I thought the decoder usually had the pins, and it attached to the loco. How are the wires to the motor attached? Anyone willing to PM me at this screen name on the yahoo network and offer their expertise? ![Huh? ???](https://www.bachmanntrains.com/home-usa/board/Smileys/default/huh.gif)
Thanks again.
![Huh? ???](https://www.bachmanntrains.com/home-usa/board/Smileys/default/huh.gif)
Thanks again.