Finally had a chance to get back to it and I figured it out... 

once the PW is reset you need to go to the find product option since the decoder doesn't show up in the list of locomotives. 

then you can change the name and enter a new password if you want. 

thanks!

Carl

Welcome!

Unfortunately, with the way ESU/Scaletrains designed the motherboard on the rivet counter units, the LM-21-3S (and more specifically and Non-ESU decoders) doesn't play nicely with ScaleTrains 21-pin locomotives. I've spent the last year (on and off) understanding the motherboard in a ScaleTrains GP30 and I know why the LM doesn't work. I have not been able to figure out a way to make it work without replacing the ScaleTrains motherboard. DecoderBuddy is the best route I know of at this point to replace the  motherboard.

Also, read this thread where Kevin has some more information on the 21-pin with a ST loco: https://rpug.pdc.ca/index.php/topic,1666.msg11645.html#msg11645

I can't speak to the load balancing as I use RailPro on my small (in progress) switching layout, although from what I have read it works well and can be used with DPU's.

The lighting effects with the LEDs are really great and mimic the prototype extremely well. Also, if a lighting option doesn't exist, Ring is available to help.

Howdy there LVRR 1856 - I've always been attracted to the Lehigh Valley paint scheme(s)!
That's one nice & simple install there. Thanks for sharing!
That's a good trick with that Digitrax wiring harness. I was unaware that was an option. I can see how it can make life simple. I will certainly keep that in my back-pocket for a future install.

See next post for picture - (had trouble with picture editing)

Great, thanks, Tim!