I'm a DCC newbie. My first decoder install on an atlas gp35 went well and after much squeezing and shaving, I've managed to install a decoder in the tender of an MDC roundouse 2-8-0. Now I seem to have developed a short somewhere. Is there a tried and true method of determining the cause of the short? Is there a way to test the functionality of the chip once it is wired in to make sure that it is working properly? The light function works fine but there's no motor rotation on either DCC or DC track power. And as a final open ended question , are there any tips out there that would help out? TIA Rich.