Kit: MX648; SugarCube5 speaker
Nice empty interior to the tender once the DCC socket is removed. It isn't very long or deep, but should prove enough to get
our kit into.
The SugarCube5 speaker sits toward the back - the perfect height for this tender.
We remove the protective sleeve from the decoder, unsolder all of the wires, and solder back some new (thinner) decoder wire
for the pickups and speaker. The motor wires will simply be the wires that come through from the loco, directly soldered to the
decoder. This is necessary to keep space requirements to a minimum - no solder-joins with heat-shrink, which are bulky in
comparison to direct wiring.
Give it all a test to ensure it runs in the expected direction (swap motor wires around if not).
Replace the original decoder sleeve with Kapton tape, which is thinner, snip the plastic screw mounts from the tender floor,
and position everything in place using double-sided sticky tape.
Assuming we've been neat enough, the components should be the perfect length for the tender space as we slip the body back on.