Marklin 60972, 60982, MLD or MLD3, DCC and ESU newer
style. (Aux switch functions 21 pin)
Wire one of the black input leads to pin 16 +UB ( Orange
Marklin, Blue ESU). The other black wire goes to either available Aux Port.
AUX1 (Pin 15), Aux2 (Pin 14), Aux3 (Pin 13), Aux4(Pin 4), Aux5 (Pin 17)
Marklin 60760 or similar decoders (only one light switch
function) most cheap decoders.
These decoders have 2 wires going to the head light. In
essence the sound module will just be paralleled with the front light.
Wire one black wire from the sound module to one of each of
the wires going to the light.
DC 2-rail analog operation:
Connect one black wire to the left track feeder, the other
to the right track feeder.
AC 3- rail analog operation:
Connect one black wire to the rail connection Chassis
ground. The other black wire goes to the pick up shoe connection (mostly the
light bulb socket works well).
Here in essence the Sound module is just connected to the
track power directly. The sound will play once the power exceeds 5V and then
stops playing until the train stopped for 1+ seconds before playing the sound
again.