I have several older, 15 years or so Bachmann "Spectrum" diesel locomotives and would like to convert them to DCC. How does one start this process. fore I buy anything how would one know,say what decoder to buy. Do you have classes given that would help? Please give me some words of encouragement.   Thanks

I have 3 Spectrum "GE DASH 8-40 CW DIESEL LOCOMOTIVES, all of which have H850X-PC801 PC Boards. I want to change them to full DCC Control. Can this be done by just adding a decoder ? If so what part number do I need to get.    thank you Bill jensen