Does Bachmann sell or recommend a speaker for the 70 ton 3 truck Climax engine?  Mine came with a
Bachmann decoder and no speaker. I have a Tsunami decoder for it but the speaker space is very small.

Does anyone know the voltage of the bulbs installed in the 80 ton 3 truck shay at the factory?
I have a new one that I want to to convert to DCC and need to know if I will need a resistor for the LEDs