Here is a quick video demo of the set up. This is all plug and play using servo cables. No soldering is required. So the Tamiya guys can now up grade to programmable sound and use their stock Tamiya electronics with no modification needed unless you want to tie into the Tamiya amp. This requires you to solder one input pin to the Tamiya volume control.

So with this you can add any tank sound to an existing Tamiya set of electronics. As in the Demo this M4 system is producing sounds for a Tiger.

Excuse the mess as this is right after the development phase of this . The rats nest of servo cables can be routed and cleaned up in a tank install

https://www.youtube.com/watch?v=bKt2iIfeYBw