Firstly, I'm extremely new to both model railroading and TrainBoard, please pardon my severe ignorance. You have to start somewhere I suppose. I am going to attempt to jump head first into DCC++. I don't have all of the components yet but they are on the way: RasberryPi, Arduino Uno, Pololu (for the 3 amps). The reason for this post though, is that I bought a used Kato EMD SD40-2. I'm not sure if it is DCC ready. I removed the shell and I see what I think is a light board, but I'm not sure. I went online to try to find a picture of something that looks like what I have. I found the following: https://www.worthpoint.com/worthopedia/ho-kato-emd-sd40-norfolk-southern-1789446503 I guess I could have just taken a photo of my engine and uploaded that. In the photo, the electronic component board that is sitting atop the engine is what I'm wondering about. It has lights on it so I assumed it was some type of light board. My first dumb question is, is this "light board" a dcc decoder? I don't think it is, not sure. My next dumb question is, if not, which "drop in" decoder should I get? I found a decoder selector website that helps you find one that works for what you have, the problem is, the list of decoders it filters down to, they look to be plug and play type, but the electronics sitting atop my engine don't appear to have any thing to plug into. I don't need plug and play really. I'm not afraid of a little soldering if needed. I just don't know what I'm looking at. Again, extremely new. I was planning to head to the nearest train hobby shop local to me but it's an hour away so I thought maybe someone online might be able to help. I tried looking for numbers on the board or around the engine but didn't see any. If you've read this far, thank you very much for your time and if you can offer any help, that would be greatly appreciated.