Turn your ScaleTrains diesel into a fully sound-equipped locomotive with the NixTrainz NTZ-501 conversion kit. This all-in-one HO scale package pairs the V5b Decoder Buddy motherboard with a Power Bridge III keep-alive and a Scale Sound Systems speaker, giving you flicker-free lights, uninterrupted sound over dirty track, and a clean, solder-light install. Just add your favorite 21-pin decoder and you're ready to run.
Looking for more HO DCC and sound gear? Browse our HO Track, Tools & Accessories and HO Trains & Track.
| Item |
Qty |
| V5b Decoder Buddy (with 1.0K resistors) |
1 |
| Power Bridge III keep-alive (two 1.0 Farad super capacitors) |
1 |
| Scale Sound Systems Universal #1 speaker with enclosure |
1 |
| Mounting adhesive |
1 |
Note: A 21-pin sound decoder is required and is not included.
Which locomotives does this kit fit?
It's designed for ScaleTrains HO diesels including the EMD GP38-2, GP40, SD7 & 9, SD40-2, and SD45, plus GE Dash 8-40C, Dash 9, and ES/ET/GEVO/Tier 4 models.
Does it come with a decoder?
No. The kit provides the Decoder Buddy motherboard, keep-alive, and speaker. You supply any standard 21-pin sound decoder of your choice.
What does the Power Bridge III do?
It's a keep-alive circuit with two 1.0 Farad super capacitors that stores power to prevent sound dropouts, light flicker, and stalling on dirty track or turnouts.
Do I need to solder?
Installation is largely plug-and-play thanks to the 21-pin Decoder Buddy, though basic hobby soldering skills are helpful for the speaker and keep-alive connections.
