I purchased a second hand unit which came with no information.  Dumbest question, but where are the 4 switches to control the engine?  I thought they were hidden behind the sand boxes on rear water tank but I'm not able to get either those off.

Thanks in advance for your reply and help.

I want to size my sound decoder correctly and need to know what max amp draw is from this engine.  I do not have the specs for it as I bought it second hand.  Please help by indicating the amp draw of this G Scale, 2 Truck Shay unit.

Thank you.