The NMJ Superline Skd220c has a decoder installed by default. The decoder, a Zimo MX64, is installed behind the motor, mostly hidden by the interior. The first steps is to remove the decoder.

This page is about installing a sound decoder in this model.

After removing the original decoder it is time to select the sound decoder. All my installs are using ESU Loksound as I find them superior to many other decoders. This picture shows three Loksound 5 decoders. From top to bottom; Loksound 5 DCC, Loksound 5 Micro and the Loksound 5 Nano. As there is very little space in this small switcher I've used the Nano.

This shows most of the major parts. The locomotive has been dissassemebled. In front the speaker, which will be mounted in the roof of the cab. As this is a small locomotive I've decided to install a power pack. This photo shows both the ESU and the ToM power pack. As the ToM power pack has a small capacitor, I've used this version.

The Loksound Nano and the power pack board fit next to each other in the location where the original decoder was installed.

The second photo shows the wiring between the two boards. The Power pack black wire is installed to the GND location. The red wire is wired to the U+ location, this is also the common blue wire for all the output functions. The white control wire is installed to Aux3. Then in the Lokprogrammer software, Aux3 is set to Powerpack Control.

I first wanted to re-use the existing lights but I blew that out in the first test. Therefore I had to remove all the lights (left). I decided to go for led lights. I glued small pre-wired LEDs to small lenses and then installed them in the shell.

After the lights were installed, it was time to mount it all back together. The speaker is installed in the roof. The capacitor is installed in the cab as well. For that I had to remove one of the cab weights.

The end result. The switching locomotive on the layout. If you look very carefully you can see some wires and the speaker that is mounted in the roof of the cab. But by default you don't notice it. Mission accomplished.

A quick sound demo.

For sound I installed sound project S0367 - Kö I (Deutz A4L514). This is not the correct motor sound for the Skd 220c but it sounds good for a small switcher. Maybe one day there will be a good Rolls-Royce recording.