I'm new to model railroading and have just purchased a Bachman Spectrum 0-6-0 Saddletank loco, sans tender.  I am under the impression that this will work just fine on my DC HO mining layout. However when I unpacked it and tried it out on my workbench 'test' track it wouldn't run.  The Walthers  GP 30 on the same track ran well so I know power is getting to it.   Is there something one has to do to a DCC loco.... like take it apart and push a hidden switch on the board to get it to run?