For this experiment we're using the wheeled Duplo push and go motor block and red cabin from Set #10874.
The wheel width of the motor is the same width as a non motor base.
So, for this train to stay on the six stud track, the wheels need to sit either on the inside of the tracks or the outside of the tracks.
As the last picture shows, the wheels ...
If the schematic you are asking is for the LegoDuplo, Train Push & Go Motor
with the circuit board that looks like:
This schematic is proprietary information that belongs to the Lego group.
This element uses a Bluetooth Low Energy radio and has an FCC ID: NPI28743
Perhaps you could create your own schematic and post it here.